Method and device for wireless communication in ue and base station

ABSTRACT

The present disclosure discloses a method and a device for wireless communications in a UE and a base station. A first node transmits a first signal; and monitors a first-type signaling in a first resource block in a first time window. The first signal is used for determining a first reference signal; the first node assumes a QCL parameter identical to a target reference signal for monitoring the first-type signaling in the first resource block in the first time window; the target reference signal is either the first reference signal or a second reference signal; whether the first time window belongs to a first-type time window is used for determining the target reference signal between the first reference signal and the second reference signal. The method provided above raises the chance of a node being served and resource utilization ratio in Unlicensed Spectrum.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Chinese PatentApplication No. 202010639812.6, filed on Jul. 6, 2020 and the prioritybenefit of Chinese Patent Application No. 202010671045.7, filed on Jul.13, 2020, the full disclosure of which is incorporated herein byreference.

BACKGROUND Technical Field

The present disclosure relates to methods and devices for transmissionin wireless communication systems, and in particular to a method anddevice of radio signal transmission in a wireless communication systemsupporting cellular network.

Related Art

Application scenarios of future wireless communication systems arebecoming increasingly diversified, and different application scenarioshave different performance demands on systems. In order to meetdifferent performance requirements of various application scenarios, the3^(rd) Generation Partner Project (3GPP) Radio Access Network (RAN) #75plenary approved a study item (SI) of access to Unlicensed Spectrum ofNew Radio (NR), and later at the 3GPP RAN #78 Plenary it was decidedthat the access to Unlicensed Spectrum was supported in NR Release(R)15. In Long Term Evolution (LIE) and NR systems, a transmitter, i.e.,a base station or a User Equipment (UE), shall first perform ListenBefore Talk (LBT) before transmitting data on Unlicensed Spectrum toensure no interference with other ongoing wireless transmissions on theUnlicensed Spectrum.

Massive MIMO is another important technical feature of the NR system,employing multiple antennas to form a narrow beam through beamformingthat points in a specific direction, thus improving the communicationquality. In the NR system, the massive MIMO is generally applied inUnlicensed Spectrum in the millimeter-wave band.

The uncertainty of LBT result will result in a reduction in thetransmission opportunity of a transmitter, so that the density oftransmission opportunity needs to be increased to achieve a higherresource utilization ratio. On the other hand, the increasing density oftransmission opportunity will make the processing of the receiver morecomplicated. For the balance between resource utilization ratio andprocessing complexity, the concept of search space set group isintroduced in NR R15, making it possible to switch a search space setgroup between inside and outside a channel occupancy time (COT), andtransmission opportunity densities configured can vary with differentsearch space set groups, which not only enhances the probability of thetransmitter's channel occupancy but also avoids too much complexity inthe receiver processing.

SUMMARY

Inventors find through researches that in beam-based UnlicensedSpectrum, since interference situations in different beam directions mayvary a great deal, one or more beams available in a channel occupancywill change along with interference situations on different beams, whichwill have some impact on the beam management mechanism in UnlicensedSpectrum. To address the above problem, the present disclosure providesa solution. It should be noted that although only Unlicensed Spectrumand massive MIMO are stated above for example, the present disclosure isalso applicable to scenarios such as Licensed Spectrum and othermulti-antenna systems, where similar technical effects will be achieved.Additionally, the adoption of a unified solution for various scenarios(including but not limited to Licensed Spectrum, Unlicensed Spectrum,massive MIMO and other multi-antenna systems) contributes to thereduction of hardcore complexity and costs. If no conflict is incurred,the embodiments of the first node in the present disclosure and thecharacteristics in the embodiments can be applied to the second node,and vice versa. And the embodiments in the present disclosure andcharacteristics in the embodiments can be mutually combined if there isno conflict.

The NR R16 introduced multi-Transmitter Receiver Point (TRP) basedrepetitions of transmission for increasing the transmission reliabilityof data channel. Inventors find through researches that if differentTRPs perform LBTs independently from each other, channel occupancies byany two TRPs will be mutually independent. Under such a circumstance,the switch of search space set group may be greatly influenced. Toaddress the above problem, the present disclosure provides a solution.It should be noted that although only Unlicensed Spectrum and multi-TRPtransmission scenario are stated above for example, the presentdisclosure is also applicable to scenarios such as Licensed Spectrum andsingle-TRP transmission, where similar technical effects will beachieved. Additionally, the adoption of a unified solution for variousscenarios (including but not limited to Licensed Spectrum, UnlicensedSpectrum, multi-TRP transmission and single-TRP transmission)contributes to the reduction of hardcore complexity and costs. If noconflict is incurred, the embodiments of the first node in the presentdisclosure and the characteristics in the embodiments can be applied tothe second node, and vice versa. And the embodiments in the presentdisclosure and characteristics in the embodiments can be mutuallycombined if there is no conflict.

The present disclosure provides a method in a first node for wirelesscommunications, comprising:

transmitting a first signal; and

monitoring a first-type signaling in a first resource block in a firsttime window in a first sub-band;

herein, the first signal is used to determine a first reference signal;for the monitoring on the first-type signaling in the first resourceblock in the first time window, the first node assumes same QCLparameters as a target reference signal; the target reference signal iseither the first reference signal or a second reference signal; whetherthe first time window belongs to a first-type time window is used todetermine the target reference signal between the first reference signaland the second reference signal; any said first-type time windowcorresponds to a reference signal group, a target time window is thefirst-type time window, and the target time window corresponds to atarget reference signal group; when the first time window belongs to thetarget time window, whether the first reference signal and one referencesignal from the target reference signal group are QCLed is used todetermine the target reference signal between the first reference signaland the second reference signal.

In one embodiment, a problem to be solved in the present disclosure ishow to determine available beam(s) in beam-based Unlicensed Spectrum.The method provided above determines a receiving/Rx beam depending onwhether it is currently in the stage of a channel occupancy, therebysolving the problem.

In one embodiment, characteristics of the above method include that onesaid first-type time window is within a channel occupancy, and areference signal group corresponding to the first-type time windowrepresents one or more beams available in the channel occupancy; thefirst node determines a monitoring beam for a Physical Downlink ControlCHannel (PDCCH) according to whether it is currently in the stage of achannel occupancy and based on available beam(s) within the channeloccupancy.

In one embodiment, advantages of the above method include that bydetermining a beam used for monitoring a PDCCH from the currentlyavailable beams, a node is more likely to be served and the resourceutilization ratio will get higher.

According to one aspect of the present disclosure, comprising:

receiving a first signaling;

herein, the first time window belongs to the target time window; thefirst signaling is used to determine the target time window and thetarget reference signal group.

According to one aspect of the present disclosure, comprising:

performing a first access detection; and

transmitting a second signal upon completion of the first accessdetection;

herein, the first time window belongs to the target time window; thesecond signal is used to determine the target time window and the targetreference signal group.

According to one aspect of the present disclosure, comprising:

determining whether a first condition is fulfilled for each first-typereference signal comprised in a first-type reference signal set;

herein, whether each first-type reference signal comprised in thefirst-type reference signal set fulfills the first condition is used todetermine whether the first signal is transmitted; the first nodedetermines that each first-type reference signal comprised in thefirst-type reference signal set fulfills the first condition, anddetermines to transmit the first signal; the given first-type referencesignal is any first-type reference signal comprised in the first-typereference signal set, and a first transmission occasion set is reservedfor the given first-type reference signal; when the given first-typereference signal fulfills one of a first condition subset and a secondcondition subset, the given first-type reference signal fulfills thefirst condition;

the first condition subset comprises: a number of transmission occasionscomprised by a first occasion subset is greater than a first threshold;the first node drops receiving the given first-type reference signal inthe first occasion subset, the first occasion subset being a subset ofthe first transmission occasion set;

the second condition subset comprises: a first received quality is lowerthan a second threshold; a measurement on the given first-type referencesignal in a second occasion subset is used to determine the firstreceived quality, and the first node receives the given first-typereference signal in the second occasion subset, the second occasionsubset being a subset of the first transmission occasion set.

According to one aspect of the present disclosure, comprising:

determining whether to receive the given first-type reference signal ina first given transmission occasion;

herein, the first given transmission occasion is one transmissionoccasion in the first transmission occasion set.

According to one aspect of the present disclosure, comprising:

determining whether a second condition is fulfilled for each second-typereference signal comprised in a second-type reference signal set;

herein, a second-type reference signal subset is composed of second-typereference signals comprised in the second-type reference signal set thatfulfill the second condition, and the first reference signal is asecond-type reference signal in the second-type reference signal subset;a given second-type reference signal is any second-type reference signalcomprised in the second-type reference signal set, and a secondtransmission occasion set is reserved for the given second-typereference signal; when the given second-type reference signal fulfillsboth a third condition subset and a fourth condition subset, the givensecond-type reference signal fulfills the second condition;

the third condition subset comprises: a number of transmission occasionscomprised by a third occasion subset is greater than a third threshold;the first node receives the given second-type reference signal in thethird occasion subset, the third occasion subset being a subset of thesecond transmission occasion set;

the fourth condition subset comprises: a second channel quality isgreater than or equal to a fourth threshold; a measurement on the givensecond-type reference signal in the third occasion subset is used todetermine the second channel quality.

According to one aspect of the present disclosure, comprising:

determining whether to receive the given second-type reference signal ina second given transmission occasion;

herein, the second given transmission occasion is one transmissionoccasion in the second transmission occasion set.

According to one aspect of the present disclosure, the above method ischaracterized in that the first node is a UE.

According to one aspect of the present disclosure, the above method ischaracterized in that the first node is a relay node.

The present disclosure provides a method in a second node for wirelesscommunications, comprising:

receiving a first signal; and

transmitting a first-type signaling in a first resource block in a firsttime window in a first sub-band, or, dropping transmitting thefirst-type signaling in the first resource block in the first timewindow in the first sub-band;

herein, the first signal is used to determine a first reference signal;a transmitter of the first signal assumes a QCL parameter identical to atarget reference signal for monitoring the first-type signaling in thefirst resource block in the first time window in the first sub-band; thetarget reference signal is either the first reference signal or a secondreference signal; whether the first time window belongs to a first-typetime window is used to determine the target reference signal between thefirst reference signal and the second reference signal; any saidfirst-type time window corresponds to a reference signal group, a targettime window is the first-type time window, and the target time windowcorresponds to a target reference signal group; when the first timewindow belongs to the target time window, whether the first referencesignal and one reference signal from the target reference signal groupare QCLed is used to determine the target reference signal between thefirst reference signal and the second reference signal.

According to one aspect of the present disclosure, comprising:

transmitting a first signaling;

herein, the first time window belongs to the target time window; thefirst signaling is used to determine the target time window and thetarget reference signal group.

According to one aspect of the present disclosure, comprising:

receiving a second signal;

herein, the first time window belongs to the target time window; thesecond signal is used to determine the target time window and the targetreference signal group.

According to one aspect of the present disclosure, comprising:

determining whether to transmit a given first-type reference signal in afirst given transmission occasion;

herein, the given first-type reference signal is any first-typereference signal comprised in a first-type reference signal set, and thefirst-type reference signal set is used to determine whether the firstsignal is transmitted; a first transmission occasion set is reserved forthe given first-type reference signal, and the first given transmissionoccasion is one transmission occasion in the first transmission occasionset.

According to one aspect of the present disclosure, comprising:

determining whether to transmit a given second-type reference signal ina second given transmission occasion;

herein, the given second-type reference signal is any second-typereference signal comprised in a second-type reference signal set, andthe first reference signal is a second-type reference signal in thesecond-type reference signal set; a second transmission occasion set isreserved for the given second-type reference signal, and the secondgiven transmission occasion is one transmission occasion in the secondtransmission occasion set.

According to one aspect of the present disclosure, the above method ischaracterized in that the second node is a base station.

According to one aspect of the present disclosure, the above method ischaracterized in that the second node is a UE.

According to one aspect of the present disclosure, the above method ischaracterized in that the second node is a relay node.

The present disclosure provides a first node for wirelesscommunications, comprising:

a first transmitter, transmitting a first signal; and

a first processor, monitoring a first-type signaling in a first resourceblock in a first time window in a first sub-band;

herein, the first signal is used to determine a first reference signal;for the monitoring on the first-type signaling in the first resourceblock in the first time window, the first node assumes same QCLparameters as a target reference signal; the target reference signal iseither the first reference signal or a second reference signal; whetherthe first time window belongs to a first-type time window is used todetermine the target reference signal between the first reference signaland the second reference signal; any said first-type time windowcorresponds to a reference signal group, a target time window is thefirst-type time window, and the target time window corresponds to atarget reference signal group; when the first time window belongs to thetarget time window, whether the first reference signal and one referencesignal from the target reference signal group are QCLed is used todetermine the target reference signal between the first reference signaland the second reference signal.

The present disclosure provides a second node for wirelesscommunications, comprising:

a first receiver, receiving a first signal; and

a second processor, transmitting a first-type signaling in a firstresource block in a first time window in a first sub-band, or, droppingtransmitting the first-type signaling in the first resource block in thefirst time window in the first sub-band;

herein, the first signal is used to determine a first reference signal;a transmitter of the first signal assumes a QCL parameter identical to atarget reference signal for monitoring the first-type signaling in thefirst resource block in the first time window in the first sub-band; thetarget reference signal is either the first reference signal or a secondreference signal; whether the first time window belongs to a first-typetime window is used to determine the target reference signal between thefirst reference signal and the second reference signal; any saidfirst-type time window corresponds to a reference signal group, a targettime window is the first-type time window, and the target time windowcorresponds to a target reference signal group; when the first timewindow belongs to the target time window, whether the first referencesignal and one reference signal from the target reference signal groupare QCLed is used to determine the target reference signal between thefirst reference signal and the second reference signal.

The present disclosure provides a method in a first node for wirelesscommunications, comprising:

monitoring a first-type signaling in a first resource block set in afirst time window in a first sub-band;

receiving a first signaling in a first resource block;

monitoring a second-type signaling in a second resource block set in asecond time window in the first sub-band; and

monitoring a third-type signaling in a target resource block set in athird time window in a second sub-band;

herein, the first signaling is used by the first node for determining tomonitor the second-type signaling in the second resource block set inthe second time window in the first sub-band; the first signaling isused to determine a first index and a third index, the first index beinga first-type index, and the third index being a third-type index; anyone of the first resource block set, the second resource block set andthe target resource block set corresponds to a said first-type index anda second-type index; the first-type index corresponding to the firstresource block set and the first-type index corresponding to the secondresource block set are both equal to the first index, while thesecond-type index corresponding to the first resource block set isunequal to the second-type index corresponding to the second resourceblock set; the first-type index corresponding to the target resourceblock set is equal to a second index; the first sub-band and the secondsub-band respectively belong to a first serving cell and a secondserving cell, and the first serving cell and the second serving cellrespectively correspond to two said third-type indexes; the third-typeindex corresponding to the first serving cell is equal to the thirdindex, and the third-type index corresponding to the second serving cellis equal to a fourth index; the first index, the second index, the thirdindex and the fourth index are jointly used to determine whether thesecond-type index corresponding to the target resource block set alignswith the second-type index corresponding to the second resource blockset; the first signaling is used to determine a start of the second timewindow, a start of the third time window being the same as the start ofthe second time window.

In one embodiment, a problem to be solved in the present disclosureincludes how to achieve handover of search space set group when LBTs areperformed independently among multiple TRPs in a multi-TRP transmission.By using a first-type index symbolizing TRP for determining in whichcases the search space set group handover can be applied, the presentdisclosure offers a solution to the above problem.

In one embodiment, characteristics of the above method include that thefirst-type index is used for denoting a TRP corresponding to a resourceblock set, while the second-type index is used for denoting a searchspace set group corresponding to a resource block set; whether tworesource block sets correspond to a same TRP is used to determinewhether or not to switch to these two resource block setssimultaneously.

In one embodiment, advantages of the above method include supportingmultiple TRPs in performing LBTs independently from each other in amulti-TRP transmission, and occupying or releasing a channel(s)according to the LBT results; the method improves resource utilizationratio and the flexibility.

According to one aspect of the present disclosure, comprising:

receiving a first information block;

herein, the first information block is used to determine a first indexpair set; the first index pair set comprises K index pairs, K being apositive integer greater than 1; any index pair in the first index pairset comprises one said third-type index and one said first-type index;the third index-the first index pair belongs to the first index pairset; when the fourth index-the second index pair belongs to the firstindex pair set, the second-type index corresponding to the targetresource block set aligns with the second-type index corresponding tothe second resource block set; when the fourth index-the second indexpair does not belong to the first index pair set, the second-type indexcorresponding to the target resource block set does not align with thesecond-type index corresponding to the second resource block set.

According to one aspect of the present disclosure, the above method ischaracterized in that when the third index is equal to the fourth indexand the first index is equal to the second index, the second-type indexcorresponding to the target resource block set aligns with thesecond-type index corresponding to the second resource block set; whenthe third index is equal to the fourth index and the first index isunequal to the second index, the second-type index corresponding to thetarget resource block set does not align with the second-type indexcorresponding to the second resource block set.

According to one aspect of the present disclosure, the above method ischaracterized in that the first signaling is used to determine a firstreference time window, an end of the first reference time window is usedto determine a first reference time, and an end of the second timewindow is no later than the first reference time.

According to one aspect of the present disclosure, comprising:

setting a first counter's value to a first time length after detectingthe first signaling

According to one aspect of the present disclosure, comprising:

decrementing the first counter by 1 for each second-type reference slotpassed;

herein, a third reference subcarrier spacing (SCS) is used to determinea length of one said second-type reference slot; a time of expiration ofthe first counter is used to determine a second reference time, and anend of the second time window is no later than the second referencetime.

According to one aspect of the present disclosure, the above method ischaracterized in that the first signaling is used to determine a firstreference signal group; any resource block comprised by the targetresource block set is a resource block in a third resource block set;the first reference signal group is used to determine the targetresource block set from the third resource block set.

According to one aspect of the present disclosure, the above method ischaracterized in that the first node is a UE.

According to one aspect of the present disclosure, the above method ischaracterized in that the first node is a relay node.

The present disclosure provides a method in a second node for wirelesscommunications, comprising:

transmitting a first-type signaling in a first resource block set in afirst time window in a first sub-band, or, dropping transmitting thefirst-type signaling in the first resource block set in the first timewindow in the first sub-band;

transmitting a first signaling in a first resource block;

transmitting a second-type signaling in a second resource block set in asecond time window in the first sub-band, or, dropping transmitting thesecond-type signaling in the second resource block set in the secondtime window in the first sub-band; and

transmitting a third-type signaling in a target resource block set in athird time window in a second sub-band, or, dropping transmitting thethird-type signaling in the target resource block set in the third timewindow in the second sub-band;

herein, the first signaling is used for determining to monitor thesecond-type signaling in the second resource block set in the secondtime window in the first sub-band; the first signaling is used todetermine a first index and a third index, the first index being afirst-type index, and the third index being a third-type index; any oneof the first resource block set, the second resource block set and thetarget resource block set corresponds to a said first-type index and asecond-type index; the first-type index corresponding to the firstresource block set and the first-type index corresponding to the secondresource block set are both equal to the first index, while thesecond-type index corresponding to the first resource block set isunequal to the second-type index corresponding to the second resourceblock set; the first-type index corresponding to the target resourceblock set is equal to a second index; the first sub-band and the secondsub-band respectively belong to a first serving cell and a secondserving cell, and the first serving cell and the second serving cellrespectively correspond to two said third-type indexes; the third-typeindex corresponding to the first serving cell is equal to the thirdindex, and the third-type index corresponding to the second serving cellis equal to a fourth index; the first index, the second index, the thirdindex and the fourth index are jointly used to determine whether thesecond-type index corresponding to the target resource block set alignswith the second-type index corresponding to the second resource blockset; the first signaling is used to determine a start of the second timewindow, a start of the third time window being the same as the start ofthe second time window.

According to one aspect of the present disclosure, comprising:

transmitting a first information block;

herein, the first information block is used to determine a first indexpair set; the first index pair set comprises K index pairs, K being apositive integer greater than 1; any index pair in the first index pairset comprises one said third-type index and one said first-type index;the third index-the first index pair belongs to the first index pairset; when the fourth index-the second index pair belongs to the firstindex pair set, the second-type index corresponding to the targetresource block set aligns with the second-type index corresponding tothe second resource block set; when the fourth index-the second indexpair does not belong to the first index pair set, the second-type indexcorresponding to the target resource block set does not align with thesecond-type index corresponding to the second resource block set.

According to one aspect of the present disclosure, the above method ischaracterized in that when the third index is equal to the fourth indexand the first index is equal to the second index, the second-type indexcorresponding to the target resource block set aligns with thesecond-type index corresponding to the second resource block set; whenthe third index is equal to the fourth index and the first index isunequal to the second index, the second-type index corresponding to thetarget resource block set does not align with the second-type indexcorresponding to the second resource block set.

According to one aspect of the present disclosure, the above method ischaracterized in that the first signaling is used to determine a firstreference time window, an end of the first reference time window is usedto determine a first reference time, and an end of the second timewindow is no later than the first reference time.

According to one aspect of the present disclosure, the above method ischaracterized in that a target receiver of the first signalingconfigures a first counter's value to a first time length after thefirst signaling is detected.

According to one aspect of the present disclosure, the above method ischaracterized in that the first counter is decremented by 1 for eachsecond-type reference slot passed; a third reference subcarrier spacing(SCS) is used to determine a length of one said second-type referenceslot; a time of expiration of the first counter is used to determine asecond reference time, and an end of the second time window is no laterthan the second reference time.

According to one aspect of the present disclosure, the above method ischaracterized in that the first signaling is used to determine a firstreference signal group; any resource block comprised by the targetresource block set is a resource block in a third resource block set;the first reference signal group is used to determine the targetresource block set from the third resource block set.

According to one aspect of the present disclosure, the above method ischaracterized in that the second node is a base station.

According to one aspect of the present disclosure, the above method ischaracterized in that the second node is a UE.

According to one aspect of the present disclosure, the above method ischaracterized in that the second node is a relay node.

The present disclosure provides a first node for wirelesscommunications, comprising:

a first processor, monitoring a first-type signaling in a first resourceblock set in a first time window in a first sub-band;

the first processor, receiving a first signaling in a first resourceblock;

the first processor, monitoring a second-type signaling in a secondresource block set in a second time window in the first sub-band; and

the first processor, monitoring a third-type signaling in a targetresource block set in a third time window in a second sub-band;

herein, the first signaling is used by the first node for determining tomonitor the second-type signaling in the second resource block set inthe second time window in the first sub-band; the first signaling isused to determine a first index and a third index, the first index beinga first-type index, and the third index being a third-type index; anyone of the first resource block set, the second resource block set andthe target resource block set corresponds to a said first-type index anda second-type index; the first-type index corresponding to the firstresource block set and the first-type index corresponding to the secondresource block set are both equal to the first index, while thesecond-type index corresponding to the first resource block set isunequal to the second-type index corresponding to the second resourceblock set; the first-type index corresponding to the target resourceblock set is equal to a second index; the first sub-band and the secondsub-band respectively belong to a first serving cell and a secondserving cell, and the first serving cell and the second serving cellrespectively correspond to two said third-type indexes; the third-typeindex corresponding to the first serving cell is equal to the thirdindex, and the third-type index corresponding to the second serving cellis equal to a fourth index; the first index, the second index, the thirdindex and the fourth index are jointly used to determine whether thesecond-type index corresponding to the target resource block set alignswith the second-type index corresponding to the second resource blockset; the first signaling is used to determine a start of the second timewindow, a start of the third time window being the same as the start ofthe second time window.

The present disclosure provides a second node for wirelesscommunications, comprising:

a second processor, transmitting a first-type signaling in a firstresource block set in a first time window in a first sub-band, or,dropping transmitting the first-type signaling in the first resourceblock set in the first time window in the first sub-band;

the second processor, transmitting a first signaling in a first resourceblock;

the second processor, transmitting a second-type signaling in a secondresource block set in a second time window in the first sub-band, or,dropping transmitting the second-type signaling in the second resourceblock set in the second time window in the first sub-band; and

the second processor, transmitting a third-type signaling in a targetresource block set in a third time window in a second sub-band, or,dropping transmitting the third-type signaling in the target resourceblock set in the third time window in the second sub-band;

herein, the first signaling is used for determining to monitor thesecond-type signaling in the second resource block set in the secondtime window in the first sub-band; the first signaling is used todetermine a first index and a third index, the first index being afirst-type index, and the third index being a third-type index; any oneof the first resource block set, the second resource block set and thetarget resource block set corresponds to a said first-type index and asecond-type index; the first-type index corresponding to the firstresource block set and the first-type index corresponding to the secondresource block set are both equal to the first index, while thesecond-type index corresponding to the first resource block set isunequal to the second-type index corresponding to the second resourceblock set; the first-type index corresponding to the target resourceblock set is equal to a second index; the first sub-band and the secondsub-band respectively belong to a first serving cell and a secondserving cell, and the first serving cell and the second serving cellrespectively correspond to two said third-type indexes; the third-typeindex corresponding to the first serving cell is equal to the thirdindex, and the third-type index corresponding to the second serving cellis equal to a fourth index; the first index, the second index, the thirdindex and the fourth index are jointly used to determine whether thesecond-type index corresponding to the target resource block set alignswith the second-type index corresponding to the second resource blockset; the first signaling is used to determine a start of the second timewindow, a start of the third time window being the same as the start ofthe second time window.

In one embodiment, the present disclosure has the following advantagescompared with the prior art:

determining an available beam or beams within one channel occupancy fromthe interference situations in different beam directions in beam-basedUnlicensed Spectrum, thus enhancing the chance of channel occupancy andresource utility in the Unlicensed Spectrum.

determining a beam monitoring PDCCH according to whether a channeloccupancy status is present and one or more beams available for thechannel occupancy, thus raising the chance of a node being served andthe transmission quality.

In one embodiment, the present disclosure has the following advantagescompared with the prior art:

supporting independent LBTs performed by multiple TRPs in the multi-TRPtransmission scenario and occupying or releasing channels separatelyaccording to LBT results.

improving resource utilization ratio and flexibility of the multi-TRPtransmission scenario.

BRIEF DESCRIPTION OF THE DRAWINGS

Other features, objects and advantages of the present disclosure willbecome more apparent from the detailed description of non-restrictiveembodiments taken in conjunction with the following drawings:

FIG. 1 illustrates a flowchart of a first signal and a first-typesignaling according to one embodiment of the present disclosure.

FIG. 2 illustrates a schematic diagram of a network architectureaccording to one embodiment of the present disclosure.

FIG. 3 illustrates a schematic diagram of a radio protocol architectureof a user plane and a control plane according to one embodiment of thepresent disclosure.

FIG. 4 illustrates a schematic diagram of a first communication deviceand a second communication device according to one embodiment of thepresent disclosure.

FIG. 5 illustrates a flowchart of wireless transmission according to oneembodiment of the present disclosure.

FIG. 6 illustrates a schematic diagram of a given time window accordingto one embodiment of the present disclosure.

FIG. 7 illustrates a schematic diagram of a first resource blockaccording to one embodiment of the present disclosure.

FIG. 8 illustrates a schematic diagram of whether a first time windowbelongs to a first-type time window being used to determine a targetreference signal according to one embodiment of the present disclosure.

FIG. 9 illustrates a schematic diagram of a first signaling being usedto determine a target time window and a target reference signal groupaccording to one embodiment of the present disclosure.

FIG. 10 illustrates a schematic diagram of a first access detection anda second signal according to one embodiment of the present disclosure.

FIG. 11 illustrates a schematic diagram of determining whether a givenfirst-type reference signal fulfills a first condition according to oneembodiment of the present disclosure.

FIG. 12 illustrates a schematic diagram of determining whether a givensecond-type reference signal fulfills a second condition according toone embodiment of the present disclosure.

FIG. 13 illustrates a schematic diagram of a first node determiningwhether to receive a given first-type reference signal in a first giventransmission occasion according to one embodiment of the presentdisclosure.

FIG. 14 illustrates a structure block diagram of a processing device ina first node according to one embodiment of the present disclosure.

FIG. 15 illustrates a structure block diagram of a processing device ina second node according to one embodiment of the present disclosure.

FIG. 16 illustrates a flowchart of a first-type signaling, a firstsignaling, a second-type signaling and a third-type signaling accordingto one embodiment of the present disclosure.

FIG. 17 illustrates a flowchart of wireless transmission according toone embodiment of the present disclosure.

FIG. 18 illustrates a schematic diagram of a given sub-band according toone embodiment of the present disclosure.

FIG. 19 illustrates a schematic diagram of a given time window accordingto one embodiment of the present disclosure.

FIG. 20 illustrates a schematic diagram of a given resource block setaccording to one embodiment of the present disclosure.

FIG. 21 illustrates a schematic diagram of a given serving cellcorresponding to a third-type index according to one embodiment of thepresent disclosure.

FIG. 22 illustrates a schematic diagram of a first information blockaccording to one embodiment of the present disclosure.

FIG. 23 illustrates a schematic diagram of a first index, a secondindex, a third index and a fourth index jointly being used to determinewhether a second-type index corresponding to a target resource block setaligns with a second-type index corresponding to a second resource blockset according to one embodiment of the present disclosure.

FIG. 24 illustrates a schematic diagram of a first index, a secondindex, a third index and a fourth index jointly being used to determinewhether a second-type index corresponding to a target resource block setaligns with a second-type index corresponding to a second resource blockset according to one embodiment of the present disclosure.

FIG. 25 illustrates a schematic diagram of a first signaling, a firstreference time window and a first reference time according to oneembodiment of the present disclosure.

FIG. 26 illustrates a schematic diagram of a first node configuring afirst counter according to one embodiment of the present disclosure.

FIG. 27 illustrates a schematic diagram of a first signaling, a firstreference signal group and a target resource block set according to oneembodiment of the present disclosure.

FIG. 28 illustrates a structure block diagram of a processing device ina first node according to one embodiment of the present disclosure.

FIG. 29 illustrates a structure block diagram of a processing device ina second node according to one embodiment of the present disclosure.

DESCRIPTION OF THE EMBODIMENTS

The technical scheme of the present disclosure is described below infurther details in conjunction with the drawings. It should be notedthat the embodiments of the present disclosure and the characteristicsof the embodiments may be arbitrarily combined if no conflict is caused.

Embodiment 1

Embodiment 1 illustrates a flowchart of a first signal and a first-typesignaling according to one embodiment of the present disclosure, asshown in FIG. 1. In 100 illustrated by FIG. 1, each box represents astep. Particularly, the sequential order of steps arranged in the boxesdoes not imply any specific chronological order of these steps.

In Embodiment 1, the first node in the present disclosure transmits afirst signal in step 101; and monitors a first-type signaling in a firstresource block in a first time window in a first sub-band in step 102.Herein, the first signal is used to determine a first reference signal;for the monitoring on the first-type signaling in the first resourceblock in the first time window, the first node assumes same QCLparameters as a target reference signal; the target reference signal iseither the first reference signal or a second reference signal; whetherthe first time window belongs to a first-type time window is used todetermine the target reference signal between the first reference signaland the second reference signal; any said first-type time windowcorresponds to a reference signal group, a target time window is thefirst-type time window, and the target time window corresponds to atarget reference signal group; when the first time window belongs to thetarget time window, whether the first reference signal and one referencesignal from the target reference signal group are QCLed is used todetermine the target reference signal between the first reference signaland the second reference signal.

In one embodiment, the first signal comprises a baseband signal.

In one embodiment, the first signal comprises a radio signal.

In one embodiment, the first signal comprises a radio frequency signal.

In one embodiment, the first signal comprises a first characteristicsequence.

In one embodiment, the first characteristic sequence comprises apseudo-random sequence.

In one embodiment, the first characteristic sequence comprises aZadoff-Chu sequence.

In one embodiment, the first characteristic sequence comprises a lowPeak-to-Average Power Ratio (PAPR) sequence.

In one embodiment, the first characteristic sequence comprises a CyclicPrefix (CP).

In one embodiment, the first signal comprises a Random Access Channel(RACH) Preamble.

In one embodiment, the first signal comprises Uplink control information(UCI).

In one embodiment, the first signal comprises a Link Recovery Request(LRR).

In one embodiment, the first signal comprises a Medium Access Controllayer Control Element (MAC CE).

In one embodiment, the first signal comprises a Beam Recovery Request(BRR).

In one embodiment, the first signal comprises a Beam Failure RecoveryreQuest (BFRQ).

In one embodiment, the first signal comprises a beam failure instanceindication.

In one embodiment, the first signal is transmitted on UnlicensedSpectrum.

In one embodiment, the first signal is transmitted on Licensed Spectrum.

In one embodiment, the first signal is transmitted on the firstsub-band.

In one embodiment, the first signal is transmitted on a sub-banddifferent from the first sub-band.

In one embodiment, the first signal and the first sub-band belong to asame serving cell in frequency domain

In one embodiment, the first signal and the first sub-band belong todifferent serving cells in frequency domain

In one embodiment, a serving cell to which the first signal belongs anda serving cell to which the first sub-band belongs are both parts of afirst serving cell group.

In one embodiment, one or more of a time-domain resource, afrequency-domain resource or a code-domain resource occupied by thefirst signal is(are) used to determine the first reference signal.

In one embodiment, a Physical Random Access Channel (PRACH) resourceoccupied by the first signal is used to determine the first referencesignal.

In one embodiment, a PRACH resource occupied by the first signal is oneof W1 candidate PRACH resource(s), W1 being a positive integer; the W1candidate PRACH resource(s) corresponds(correspond) to W1 referencesignal(s) respectively; the first reference signal is a reference signalof the W1 reference signal(s) corresponding to the PRACH resourceoccupied by the first signal.

In one subembodiment, the W1 candidate PRACH resource(s) and the W1reference signal(s) are respectively configured by higher layersignalings.

In one subembodiment, a correspondence relationship(s) between the W1candidate PRACH resource(s) and the W1 reference signal(s) is(are)configured by higher layer signalings.

In one subembodiment, names of higher layer signalings used forconfiguring the W1 candidate PRACH resource(s) and the W1 referencesignal(s) comprise BeamFailureRecovery.

In one subembodiment, any of the W1 candidate PRACH resource(s)comprises a time-domain resource, a frequency-domain resource and acode-domain resource.

In one embodiment, the code-domain resource comprises one or more of apseudo-random sequence, a Zadoff-Chu sequence, a low PAPR sequence or aCP.

In one embodiment, the first signal indicates the first referencesignal.

In one embodiment, the first signal comprises a bit field, the bit fieldindicating the first reference signal.

In one embodiment, the first sub-band is deployed on UnlicensedSpectrum.

In one embodiment, the first sub-band is deployed on Licensed Spectrum.

In one embodiment, the first sub-band comprises one carrier.

In one embodiment, the first sub-band comprises multiple carriers.

In one embodiment, the first sub band comprises a Bandwidth Part (BWP).

In one embodiment, the first sub-band comprises multiple BWPs.

In one embodiment, the first sub-band comprises one Resource Block (RB)set or multiple consecutive RB sets in a BWP.

In one embodiment, the first sub-band is a contiguous frequency-domainzone.

In one embodiment, the first sub-band comprises a positive integernumber of consecutive subcarriers.

In one embodiment, the first-type signaling comprises a physical layersignaling.

In one embodiment, the first-type signaling comprises a dynamicsignaling

In one embodiment, the first-type signaling comprises a layer 1 (L1)signaling

In one embodiment, the first-type signaling comprises a layer 1 (L1)control signaling

In one embodiment, the first-type signaling comprises Downlink controlinformation (DCI).

In one embodiment, the first-type signaling comprises one or more offields of a piece of DCI.

In one embodiment, the first-type signaling comprises one or more offields of a piece of Sidelink Control Information (SCI).

In one embodiment, Cyclic Redundancy Check (CRC) of the first-typesignaling is scrambled by a Cell-Radio Network Temporary Identifier(C-RNTI) or a Modulation and Coding Scheme (MCS)-C-RNTI.

In one embodiment, the monitoring refers to blind decoding, that is,receiving a signal and performing decoding; if the decoding isdetermined to be correct according to a CRC bit, it is determined that asaid first-type signaling is detected; otherwise, it is determined thatthe first-type signaling is not detected.

In one embodiment, the monitoring refers to reception based on coherentdetection, namely, performing coherent reception and measuring energy ofa signal obtained by the coherent reception; if the energy of the signalobtained by the coherent reception is greater than a first giventhreshold, it is determined that a said first-type signaling isdetected; otherwise, it is determined that the first-type signaling isnot detected.

In one embodiment, the monitoring refers to reception based on energydetection, that is, sensing energy of a radio signal and averaging toacquire a received energy; if the received energy is greater than asecond given threshold, it is determined that a said first-typesignaling is detected; otherwise, it is determined that the first-typesignaling is not detected.

In one embodiment, the phrase of monitoring a first-type signaling meansthat the first node determines whether the first-type signaling is to betransmitted according to CRC.

In one embodiment, the phrase of monitoring a first-type signaling meansthat the first node is uncertain about whether the first-type signalingis to be transmitted before determining whether the decoding is corrector not according to CRC.

In one embodiment, the phrase of monitoring a first-type signaling meansthat the first node determines according to coherent detection whetherthe first-type signaling is to be transmitted.

In one embodiment, the phrase of monitoring a first-type signaling meansthat the first node is uncertain about whether the first-type signalingis to be transmitted or not before coherent detection.

In one embodiment, the phrase of monitoring a first-type signaling meansthat the first node determines according to energy detection whether thefirst-type signaling is to be transmitted.

In one embodiment, the phrase of monitoring a first-type signaling meansthat the first node is uncertain about whether the first-type signalingis to be transmitted or not before energy detection.

In one embodiment, the first time window belongs to the first-type timewindow.

In one embodiment, the first time window does not belong to thefirst-type time window.

In one embodiment, the first reference signal and a reference signal inthe target reference signal group are QCL.

In one embodiment, the first reference signal is not QCL with anyreference signal in the target reference signal group.

In one embodiment, the phrase of QCL refers to Quasi-Co-Located.

In one embodiment, the phrase of QCL comprises QCL Type-A.

In one embodiment, the phrase of QCL comprises QCL Type-B.

In one embodiment, the phrase of QCL comprises QCL Type-C.

In one embodiment, the phrase of QCL comprises QCL Type-D.

In one embodiment, the phrase that “for the monitoring on the first-typesignaling in the first resource block in the first time window, thefirst node assumes same QCL parameters as a target reference signal”includes a meaning that the first node assumes that an antenna port ofthe first-type signaling transmitted in the first resource block isQCLed with the target reference signal.

In one embodiment, the phrase that “for the monitoring on the first-typesignaling in the first resource block in the first time window, thefirst node assumes same QCL parameters as a target reference signal”includes a meaning that the first node assumes that an antenna port ofthe first-type signaling transmitted in the first resource block isQCLed with the target reference signal, corresponding to a QCL-TypeD.

In one embodiment, the phrase that “for the monitoring on the first-typesignaling in the first resource block in the first time window, thefirst node assumes same QCL parameters as a target reference signal”includes a meaning that the first node uses a same spatial domain filterto receive the target reference signal and monitor the first-typesignaling in the first resource block.

In one embodiment, the phrase that “for the monitoring on the first-typesignaling in the first resource block in the first time window, thefirst node assumes same QCL parameters as a target reference signal”includes a meaning that the first node uses a same spatial domain filterto transmit the target reference signal and monitor the first-typesignaling in the first resource block.

In one embodiment, the phrase that “for the monitoring on the first-typesignaling in the first resource block in the first time window, thefirst node assumes same QCL parameters as a target reference signal”includes a meaning that large-scale properties of a channel that thefirst-type signaling transmitted in the first resource block goesthrough can be inferred from large-scale properties of a channel thatthe target reference signal goes through.

In one embodiment, the large-scale properties include one or more of adelay spread, a Doppler spread, a Doppler shift, an average delay or aSpatial Rx parameter.

In one embodiment, the first reference signal comprises a Channel StateInformation-Reference Signal (CSI-RS).

In one embodiment, the first reference signal comprises aSynchronisation Signal/physical broadcast channel Block (SSB).

In one embodiment, the first reference signal comprises a SoundingReference Signal (SRS).

In one embodiment, the second reference signal comprises a CSI-RS.

In one embodiment, the second reference signal comprises an SSB.

In one embodiment, the second reference signal comprises an SRS.

In one embodiment, the first reference signal and the second referencesignal cannot be assumed to be QCL.

In one embodiment, the first reference signal and the second referencesignal cannot be assumed to be QCL, corresponding to a QCL-TypeD.

In one embodiment, the second reference signal is configured by a higherlayer signaling

In one embodiment, the second reference signal is indicated by the firstsignal.

In one embodiment, a search space set to which the first resource blockbelongs is a first search space set, the first node assumes same QCLparameters as the second reference signal for monitoring the first-typesignaling in the first search space set in a latest monitoring occasionof the first search space set before transmitting the first signal.

In one embodiment, a search space set to which the first resource blockbelongs is a first search space set, the first node assumes same QCLparameters as the second reference signal for monitoring the first-typesignaling in the first search space set in a latest monitoring occasionof the first search space set before a first time point; the first timepoint is a start time of a fourth slot subsequent to a slot to which thefirst signal belongs.

In one embodiment, a COntrol REsource SET (CORESET) associated with thefirst resource block is a first CORESET, and the second reference signalis a latest reference signal indicated for the first CORESET by a MAC CEactivating command comprising an identifier of the first CORESETreceived by the first node before transmitting the first signal

In one embodiment, a CORESET associated with the first resource block isa first CORESET, and the second reference signal is a latest referencesignal indicated for the first CORESET by a MAC CE activating commandcomprising an identifier of the first CORESET received by the first nodebefore a first time point; the first time point is a start time of afourth slot subsequent to a slot to which the first signal belongs.

In one embodiment, the second reference signal is a reference signalcorresponding to a PRACH resource occupied by a latest random access ofthe first node before transmitting the first signal.

In one embodiment, the second reference signal is a reference signalcorresponding to a PRACH resource occupied by a latest random access ofthe first node before a first time point; the first time point is astart time of a fourth slot subsequent to a slot to which the firstsignal belongs.

In one embodiment, the target reference signal group comprises one ormore than one reference signal.

In one embodiment, any reference signal in the target reference signalgroup is a CSI-RS or an SSB.

In one embodiment, any reference signal in the target reference signalgroup is an SSB.

In one embodiment, any two reference signals in the target referencesignal group are not QCLed.

In one embodiment, the second reference signal is a reference signal inthe target reference signal group.

In one embodiment, the target reference signal group comprises Kreference signals, K being a positive integer greater than 1; the Kreference signals respectively correspond to K indexes, and the Kindexes are used to determine the second reference signal out of the Kreference signals; the K indexes are non-negative integers,respectively.

In one subembodiment, the second reference signal is one of the Kreference signals corresponding to a minimum index.

In one subembodiment, the second reference signal is one of the Kreference signals corresponding to a maximum index.

In one subembodiment, the K indexes are configured by higher layersignalings.

In one subembodiment, the correspondence relationship between the Kreference signals and the K indexes is configured by a higher layersignaling

In one subembodiment, the K indexes are UE-specific.

In one embodiment, the first node feeds back K1 reference signals to atransmitter of the first-type signaling, K1 being a positive integergreater than 1; a target reference signal sub-group is an intersectionof the target reference signal group and the K1 reference signals; theK1 reference signals respectively correspond to K1 indexes, the K1indexes being non-negative integers, respectively; the second referencesignal is a reference signal corresponding to a minimum index in thetarget reference signal sub-group.

In one subembodiment, any of the K1 reference signals is a CSI-RS or anSSB.

In one subembodiment, the correspondence relationship between the K1reference signals and the K1 indexes is configured by a higher layersignaling

In one subembodiment, the correspondence relationship between the K1reference signals and the K1 indexes is autonomously determined by thefirst node.

In one embodiment, the target reference signal is used to determine atime-domain resource occupied by the first resource block.

In one embodiment, the target reference signal is QCLed with a thirdreference signal of K0 reference signals, K0 being a positive integergreater than 1; K0 transmission occasion sets respectively correspond tothe K0 reference signals, and a transmission occasion occupied by thefirst resource block belongs to one of the K0 transmission occasion setsthat corresponds to the third reference signal.

In one subembodiment, each of the K0 reference signals is an SSB.

In one subembodiment, any two of the K0 reference signals are not QCLed.

In one subembodiment, the K0 transmission occasion sets are configuredby higher layer signalings

Embodiment 2

Embodiment 2 illustrates a schematic diagram of a network architectureaccording to one embodiment of the present disclosure, as shown in FIG.2.

FIG. 2 is a diagram illustrating a network architecture 200 of Long-TermEvolution (LTE), and Long-Term Evolution Advanced (LTE-A) and future 5Gsystems. The 5G NR or LTE network architecture 200 may be called a 5GSystem(5GS)/Evolved Packet System (EPS) 200. The 5GS/EPS 200 maycomprise one or more UEs 201, a UE241 in sidelink communication withUE(s) 201, an NG-RAN 202, a 5G-CoreNetwork/Evolved Packet Core (5GC/EPC)210, a Home Subscriber Server (HSS)/Unified Data Management (UDM) 220and an Internet Service 230. The 5GS/EPS 200 may be interconnected withother access networks. For simple description, the entities/interfacesare not shown. As shown in FIG. 2, the 5GS/EPS 200 provides packetswitching services. Those skilled in the art will find it easy tounderstand that various concepts presented throughout the presentdisclosure can be extended to networks providing circuit switchingservices. The NG-RAN 202 comprises a New Radio (NR) node B (gNB) 203 andother gNBs 204. The gNB 203 provides UE 201-oriented user plane andcontrol plane protocol terminations. The gNB 203 may be connected toother gNBs 204 via an Xn interface (for example, backhaul). The gNB 203may be called a base station, a base transceiver station, a radio basestation, a radio transceiver, a transceiver function, a Base Service Set(BSS), an Extended Service Set (ESS), a Transmitter Receiver Point (TRP)or some other applicable terms. The gNB 203 provides an access point ofthe 5GC/EPC 210 for the UE 201. Examples of UE 201 include cellularphones, smart phones, Session Initiation Protocol (SIP) phones, laptopcomputers, Personal Digital Assistant (PDA), Satellite Radios, GlobalPositioning System (GPS), multimedia devices, video devices, digitalaudio players (for example, MP3 players), cameras, games consoles,unmanned aerial vehicles, air vehicles, narrow-band physical networkequipment, machine-type communication equipment, land vehicles,automobiles, wearables, or any other devices having similar functions.Those skilled in the art also can call the UE 201 a mobile station, asubscriber station, a mobile unit, a subscriber unit, a wireless unit, aremote unit, a mobile device, a wireless device, a radio communicationdevice, a remote device, a mobile subscriber station, an accessterminal, a mobile terminal, a wireless terminal, a remote terminal, ahandset, a user proxy, a mobile client, a client, automobile, vehicle orsome other appropriate terms. The gNB 203 is connected with the 5GC/EPC210 via an S1/NG interface. The 5GC/EPC 210 comprises a MobilityManagement Entity (MME)/Authentication Management Field (AMF)/SessionManagement Function (SMF) 211, other MMEs//AMFs/SMFs 214, a ServiceGateway (S-GW)/User Plane Function (UPF) 212 and a Packet Date NetworkGateway (P-GW)/UPF 213. The MME/AMF/SMF 211 is a control node forprocessing a signaling between the UE 201 and the 5GC/EPC 210.Generally, the MME/AMF/SMF 211 provides bearer and connectionmanagement. All user Internet Protocol (IP) packets are transmittedthrough the S-GW/UPF 212; the S-GW/UPF 212 is connected to the P-GW/UPF213. The P-GW 213 provides UE IP address allocation and other functions.The P-GW/UPF 213 is connected to the Internet Service 230. The InternetService 230 comprises operator-compatible IP services, specificallyincluding Internet, Intranet, IP Multimedia Subsystem (IMS) and PacketSwitching Services.

In one embodiment, the first node in the present disclosure comprisesthe UE 201.

In one embodiment, the first node in the present disclosure comprisesthe UE 241.

In one embodiment, the second node in the present disclosure comprisesthe gNB203.

In one embodiment, the second node in the present disclosure comprisesthe UE 241.

In one embodiment, a radio link between the UE201 and the gNB203 is acellular link.

In one embodiment, a radio link between the UE201 and the UE 241 is asidelink.

In one embodiment, a transmitter of the first signal in the presentdisclosure includes the UE201.

In one embodiment, a receiver of the first signal in the presentdisclosure includes the gNB203.

In one embodiment, a transmitter of the first-type signaling in thepresent disclosure includes the gNB203.

In one embodiment, a receiver of the first-type signaling in the presentdisclosure includes the UE201.

In one embodiment, a transmitter of the first signaling in the presentdisclosure includes the gNB203.

In one embodiment, a receiver of the first signaling in the presentdisclosure includes the UE201.

In one embodiment, a transmitter of the second-type signaling in thepresent disclosure includes the gNB203.

In one embodiment, a receiver of the second-type signaling in thepresent disclosure includes the UE201.

In one embodiment, a transmitter of the third-type signaling in thepresent disclosure includes the gNB203.

In one embodiment, a receiver of the third-type signaling in the presentdisclosure includes the UE201.

In one embodiment, a transmitter of the first information block in thepresent disclosure includes the gNB203.

In one embodiment, a receiver of the first information block in thepresent disclosure includes the UE201.

Embodiment 3

Embodiment 3 illustrates a schematic diagram of an example of a radioprotocol architecture of a user plane and a control plane according tothe present disclosure, as shown in FIG. 3.

Embodiment 3 illustrates a schematic diagram of a radio protocolarchitecture of a user plane and a control plane according to thepresent disclosure, as shown in FIG. 3. FIG. 3 is a schematic diagramillustrating an embodiment of a radio protocol architecture of a userplane 350 and a control plane 300. In FIG. 3, the radio protocolarchitecture for a control plane 300 between a first communication node(UE, gNB or, RSU in V2X) and a second communication node (gNB, UE, orRSU in V2X) is represented by three layers, which are a layer 1, a layer2 and a layer 3, respectively. The layer 1 (L1) is the lowest layerwhich performs signal processing functions of various PHY layers. The L1is called PHY 301 in the present disclosure. The layer 2 (L2) 305 isabove the PHY 301, and is in charge of the link between the firstcommunication node and the second communication node via the PHY 301.The L2 305 comprises a Medium Access Control (MAC) sublayer 302, a RadioLink Control (RLC) sublayer 303 and a Packet Data Convergence Protocol(PDCP) sublayer 304. All the three sublayers terminate at the secondcommunication nodes of the network side. The PDCP sublayer 304 providesmultiplexing among variable radio bearers and logical channels. The PDCPsublayer 304 provides security by encrypting a packet and providessupport for handover of a first communication node between secondcommunication nodes. The RLC sublayer 303 provides segmentation andreassembling of a higher-layer packet, retransmission of a lost packet,and reordering of a packet so as to compensate the disordered receivingcaused by Hybrid Automatic Repeat reQuest (HARQ). The MAC sublayer 302provides multiplexing between a logical channel and a transport channel.The MAC sublayer 302 is also responsible for allocating between firstcommunication nodes various radio resources (i.e., resource block) in acell. The MAC sublayer 302 is also in charge of HARQ operation. In thecontrol plane 300, The RRC sublayer 306 in the L3 layer is responsiblefor acquiring radio resources (i.e., radio bearer) and configuring thelower layer using an RRC signaling between the second communication nodeand the first communication node. The radio protocol architecture in theuser plane 350 comprises the L1 layer and the L2 layer. In the userplane 350, the radio protocol architecture used for the firstcommunication node and the second communication node in a PHY layer 351,a PDCP sublayer 354 of the L2 layer 355, an RLC sublayer 353 of the L2layer 355 and a MAC sublayer 352 of the L2 layer 355 is almost the sameas the radio protocol architecture used for corresponding layers andsublayers in the control plane 300, but the PDCP sublayer 354 alsoprovides header compression used for higher-layer packet to reduce radiotransmission overhead. The L2 layer 355 in the user plane 350 alsocomprises a Service Data Adaptation Protocol (SDAP) sublayer 356, whichis in charge of the mapping between QoS streams and a Data Radio Bearer(DRB), so as to support diversified traffics. Although not described inFIG. 3, the first communication node may comprise several higher layersabove the L2 355, such as a network layer (i.e., IP layer) terminated ata P-GW 213 of the network side and an application layer terminated atthe other side of the connection (i.e., a peer UE, a server, etc.).

In one embodiment, the radio protocol architecture in FIG. 3 isapplicable to the first node in the present disclosure.

In one embodiment, the radio protocol architecture in FIG. 3 isapplicable to the second node in the present disclosure.

In one embodiment, the first signal is generated by the PHY301 or thePHY351.

In one embodiment, the first-type signaling is generated by the PHY301or the PHY351.

In one embodiment, the first-type signaling is generated by the MACsublayer 302 or the MAC sublayer 352.

In one embodiment, the first signaling is generated by the PHY301 or thePHY351.

In one embodiment, the first signaling is generated by the MAC sublayer302 or the MAC sublayer 352.

In one embodiment, the second-type signaling is generated by the PHY301or the PHY351.

In one embodiment, the second-type signaling is generated by the MACsublayer 302 or the MAC sublayer 352.

In one embodiment, the third-type signaling is generated by the PHY301or the PHY351.

In one embodiment, the third-type signaling is generated by the MACsublayer 302 or the MAC sublayer 352.

In one embodiment, the first information block is generated by the RRCsublayer 306.

Embodiment 4

Embodiment 4 illustrates a schematic diagram of a first communicationdevice and a second communication device according to the presentdisclosure, as shown in FIG. 4. FIG. 4 is a block diagram of a firstcommunication device 410 and a second communication device 450 incommunication with each other in an access network.

The first communication device 410 comprises a controller/processor 475,a memory 476, a receiving processor 470, a transmitting processor 416, amulti-antenna receiving processor 472, a multi-antenna transmittingprocessor 471, a transmitter/receiver 418 and an antenna 420.

The second communication device 450 comprises a controller/processor459, a memory 460, a data source 467, a transmitting processor 468, areceiving processor 456, a multi-antenna transmitting processor 457, amulti-antenna receiving processor 458, a transmitter/receiver 454 and anantenna 452.

In a transmission from the first communication device 410 to the secondcommunication device 450, at the first communication device 410, ahigher layer packet from a core network is provided to thecontroller/processor 475. The controller/processor 475 implements thefunctionality of the L2 layer. In DL, the controller/processor 475provides header compression, encryption, packet segmentation andreordering, and multiplexing between a logical channel and a transportchannel, and radio resource allocation of the second communicationdevice 450 based on various priorities. The controller/processor 475 isalso in charge of HARQ operation, a retransmission of a lost packet anda signaling to the second communication device 450. The transmittingprocessor 416 and the multi-antenna transmitting processor 471 performvarious signal processing functions used for the L1 layer (i.e., PHY).The transmitting processor 416 performs coding and interleaving so as toensure a Forward Error Correction (FEC) at the second communicationdevice 450 side and the mapping to signal clusters corresponding to eachmodulation scheme (i.e., BPSK, QPSK, M-PSK, and M-QAM, etc.). Themulti-antenna transmitting processor 471 performs digital spatialprecoding, which includes precoding based on codebook and precodingbased on non-codebook, and beamforming processing on encoded andmodulated signals to generate one or more parallel streams. Thetransmitting processor 416 then maps each parallel stream into asubcarrier. The mapped symbols are multiplexed with a reference signal(i.e., pilot frequency) in time domain and/or frequency domain, and thenthey are assembled through Inverse Fast Fourier Transform (IFFT) togenerate a physical channel carrying time-domain multicarrier symbolstreams. After that the multi-antenna transmitting processor 471performs transmission analog precoding/beamforming on the time-domainmulticarrier symbol streams. Each transmitter 418 converts a basebandmulticarrier symbol stream provided by the multi-antenna transmittingprocessor 471 into a radio frequency (RF) stream, which is laterprovided to different antennas 420.

In a transmission from the first communication device 410 to the secondcommunication device 450, at the second communication device 450, eachreceiver 454 receives a signal via a corresponding antenna 452. Eachreceiver 454 recovers information modulated to the RF carrier, andconverts the radio frequency stream into a baseband multicarrier symbolstream to be provided to the receiving processor 456. The receivingprocessor 456 and the multi-antenna receiving processor 458 performsignal processing functions of the L1 layer. The multi-antenna receivingprocessor 458 performs reception analog precoding/beamforming on abaseband multicarrier symbol stream provided by the receiver 454. Thereceiving processor 456 converts the processed baseband multicarriersymbol stream from time domain into frequency domain using FFT. Infrequency domain, a physical layer data signal and a reference signalare de-multiplexed by the receiving processor 456, wherein the referencesignal is used for channel estimation, while the data signal issubjected to multi-antenna detection in the multi-antenna receivingprocessor 458 to recover any second communication device 450-targetedspatial stream. Symbols on each spatial stream are demodulated andrecovered in the receiving processor 456 to generate a soft decision.Then the receiving processor 456 decodes and de-interleaves the softdecision to recover the higher-layer data and control signal transmittedby the first communication device 410 on the physical channel. Next, thehigher-layer data and control signal are provided to thecontroller/processor 459. The controller/processor 459 performsfunctions of the L2 layer. The controller/processor 459 can beassociated with a memory 460 that stores program code and data. Thememory 460 can be called a computer readable medium. In DL, thecontroller/processor 459 provides demultiplexing between a transportchannel and a logical channel, packet reassembling, decrypting, headerdecompression and control signal processing so as to recover ahigher-layer packet from the core network. The higher-layer packet islater provided to all protocol layers above the L2 layer, or variouscontrol signals can be provided to the L3 layer for processing. Thecontroller/processor 459 is also responsible for using ACK/NACKprotocols in error detection as a way to support HARQ operation.

In a transmission from the second communication device 450 to the firstcommunication device 410, at the second communication device 450, thedata source 467 is configured to provide a higher-layer packet to thecontroller/processor 459. The data source 467 represents all protocollayers above the L2 layer. Similar to a transmitting function of thefirst communication device 410 described in DL, the controller/processor459 performs header compression, encryption, packet segmentation andreordering, and multiplexing between a logical channel and a transportchannel based on radio resource allocation of the first communicationdevice 410 so as to provide the L2 layer functions used for the userplane and the control plane. The controller/processor 459 is alsoresponsible for HARQ operation, a retransmission of a lost packet, and asignaling to the first communication device 410. The transmittingprocessor 468 performs modulation and mapping, as well as channelcoding, and the multi-antenna transmitting processor 457 performsdigital multi-antenna spatial precoding, including precoding based oncodebook and precoding based on non-codebook, and beamforming. Thetransmitting processor 468 then modulates generated spatial streams intomulticarrier/single-carrier symbol streams. The modulated symbolstreams, after being subjected to analog precoding/beamforming in themulti-antenna transmitting processor 457, are provided from thetransmitter 454 to each antenna 452. Each transmitter 454 first convertsa baseband symbol stream provided by the multi-antenna transmittingprocessor 457 into a radio frequency symbol stream, and then providesthe radio frequency symbol stream to the antenna 452.

In a transmission from the second communication device 450 to the firstcommunication device 410, the function of the first communication device410 is similar to the receiving function of the second communicationdevice 450 described in the transmission from the first communicationdevice 410 to the second communication device 450. Each receiver 418receives a radio frequency signal via a corresponding antenna 420,converts the received radio frequency signal into a baseband signal, andprovides the baseband signal to the multi-antenna receiving processor472 and the receiving processor 470. The receiving processor 470 and themulti-antenna receiving processor 472 jointly provide functions of theL1 layer. The controller/processor 475 provides functions of the L2layer. The controller/processor 475 can be associated with the memory476 that stores program code and data. The memory 476 can be called acomputer readable medium. In the transmission between the secondcommunication device 450 and the first communication device 410, thecontroller/processor 475 provides de-multiplexing between a transportchannel and a logical channel, packet reassembling, decrypting, headerdecompression, control signal processing so as to recover a higher-layerpacket from the second communication device 450. The higher-layer packetcoming from the controller/processor 475 may be provided to the corenetwork. The controller/processor 475 is also responsible for usingACK/NACK protocols in error detection as a way to support HARQoperation.

In one embodiment, the second communication device 450 comprises atleast one processor and at least one memory, the at least one memorycomprises computer program codes; the at least one memory and thecomputer program codes are configured to be used in collaboration withthe at least one processor, the second communication device 450 at leasttransmits the first signal; and monitors the first-type signaling in thefirst resource block in the first time window in the first sub-band.Herein, for the monitoring on the first-type signaling in the firstresource block in the first time window, the second communication device450 assumes a QCL parameter identical to a target reference signal; thetarget reference signal is either the first reference signal or a secondreference signal; whether the first time window belongs to a first-typetime window is used to determine the target reference signal between thefirst reference signal and the second reference signal; any saidfirst-type time window corresponds to a reference signal group, a targettime window is the first-type time window, and the target time windowcorresponds to a target reference signal group; when the first timewindow belongs to the target time window, whether the first referencesignal and one reference signal from the target reference signal groupare QCLed is used to determine the target reference signal between thefirst reference signal and the second reference signal.

In one embodiment, the second communication device 450 comprises amemory that stores computer readable instruction program, the computerreadable instruction program generates actions when executed by at leastone processor, which include: transmitting the first signal; andmonitoring the first-type signaling in the first resource block in thefirst time window in the first sub-band. Herein, for the monitoring onthe first-type signaling in the first resource block in the first timewindow, the second communication device 450 assumes a QCL parameteridentical to a target reference signal; the target reference signal iseither the first reference signal or a second reference signal; whetherthe first time window belongs to a first-type time window is used todetermine the target reference signal between the first reference signaland the second reference signal; any said first-type time windowcorresponds to a reference signal group, a target time window is thefirst-type time window, and the target time window corresponds to atarget reference signal group; when the first time window belongs to thetarget time window, whether the first reference signal and one referencesignal from the target reference signal group are QCLed is used todetermine the target reference signal between the first reference signaland the second reference signal.

In one embodiment, the first communication device 410 comprises at leastone processor and at least one memory, the at least one memory comprisescomputer program codes; the at least one memory and the computer programcodes are configured to be used in collaboration with the at least oneprocessor. The first communication device 410 at least receives thefirst signal; transmits the first-type signaling in the first resourceblock in the first time window in the first sub-band, or dropstransmitting the first-type signaling in the first resource block in thefirst time window in the first sub-band. Herein, the first signal isused to determine a first reference signal; a transmitter of the firstsignal assumes a QCL parameter identical to a target reference signalfor monitoring the first-type signaling in the first resource block inthe first time window in the first sub-band; the target reference signalis either the first reference signal or a second reference signal;whether the first time window belongs to a first-type time window isused to determine the target reference signal between the firstreference signal and the second reference signal; any said first-typetime window corresponds to a reference signal group, a target timewindow is the first-type time window, and the target time windowcorresponds to a target reference signal group; when the first timewindow belongs to the target time window, whether the first referencesignal and one reference signal from the target reference signal groupare QCLed is used to determine the target reference signal between thefirst reference signal and the second reference signal.

In one embodiment, the first communication device 410 comprises a memorythat stores computer readable instruction program, the computer readableinstruction program generates actions when executed by at least oneprocessor, which include: receiving the first signal; transmitting thefirst-type signaling in the first resource block in the first timewindow in the first sub-band, or dropping transmitting the first-typesignaling in the first resource block in the first time window in thefirst sub-band. Herein, the first signal is used to determine a firstreference signal; a transmitter of the first signal assumes a QCLparameter identical to a target reference signal for monitoring thefirst-type signaling in the first resource block in the first timewindow in the first sub-band; the target reference signal is either thefirst reference signal or a second reference signal; whether the firsttime window belongs to a first-type time window is used to determine thetarget reference signal between the first reference signal and thesecond reference signal; any said first-type time window corresponds toa reference signal group, a target time window is the first-type timewindow, and the target time window corresponds to a target referencesignal group; when the first time window belongs to the target timewindow, whether the first reference signal and one reference signal fromthe target reference signal group are QCLed is used to determine thetarget reference signal between the first reference signal and thesecond reference signal.

In one embodiment, the first node in the present disclosure includes thesecond communication device 450.

In one embodiment, the second node in the present disclosure includesthe first communication device 410.

In one embodiment, at least one of the antenna 420, the receiver 418,the receiving processor 470, the multi-antenna receiving processor 472,the controller/processor 475 or the memory 476 is used for receiving thefirst signal; at least one of the antenna 452, the transmitter 454, thetransmitting processor 468, the multi-antenna transmitting processor457, the controller/processor 459 or the memory 460 is used fortransmitting the first signal.

In one embodiment, at least one of the antenna 452, the receiver 454,the receiving processor 456, the multi-antenna receiving processor 458,the controller/processor 459, the memory 460 or the data source 467 isused for monitoring the first-type signaling in the first resource blockin the first time window in the first sub-band.

In one embodiment, at least one of the antenna 420, the transmitter 418,the transmitting processor 416, the multi-antenna transmitting processor471, the controller/processor 475 or the memory 476 is used fortransmitting the first-type signaling in the first resource block in thefirst time window in the first sub-band.

In one embodiment, at least one of the antenna 452, the receiver 454,the receiving processor 456, the multi-antenna receiving processor 458,the controller/processor 459 or the memory 460 is used for receiving thefirst signaling; at least one of the antenna 420, the transmitter 418,the transmitting processor 416, the multi-antenna transmitting processor471, the controller/processor 475 or the memory 476 is used fortransmitting the first signaling

In one embodiment, at least one of the antenna 452, the receiver 454,the receiving processor 456 or the multi-antenna receiving processor 458is used for performing the first access detection.

In one embodiment, at least one of the antenna 420, the receiver 418,the receiving processor 470, the multi-antenna receiving processor 472,the controller/processor 475 or the memory 476 is used for receiving thesecond signal; at least one of the antenna 452, the transmitter 454, thetransmitting processor 468, the multi-antenna transmitting processor457, the controller/processor 459 or the memory 460 is used fortransmitting the second signal.

In one embodiment, at least one of the antenna 452, the receiver 454,the receiving processor 456 or the multi-antenna receiving processor 458is used for determining whether each first-type reference signal in thefirst-type reference signal set fulfills the first condition.

In one embodiment, at least one of the antenna 452, thereceiver/transmitter 454, the receiving processor 456, the transmittingprocessor 468, the multi-antenna receiving processor 458 or themulti-antenna transmitting processor 457 is used for determining whetherto receive the given first-type reference signal in the first giventransmission occasion; at least one of the antenna 420, thereceiver/transmitter 418, the receiving processor 470, the transmittingprocessor 416, the multi-antenna receiving processor 472 or themulti-antenna transmitting processor 471 is used for determining whetherto transmit the given first-type reference signal in the first giventransmission occasion.

In one embodiment, at least one of the antenna 452, the receiver 454,the receiving processor 456 or the multi-antenna receiving processor 458is used for determining whether each second-type reference signal in thesecond-type reference signal set fulfills the second condition.

In one embodiment, at least one of the antenna 452, thereceiver/transmitter 454, the receiving processor 456, the transmittingprocessor 468, the multi-antenna receiving processor 458 or themulti-antenna transmitting processor 457 is used for determining whetherto receive the given second-type reference signal in the second giventransmission occasion; at least one of the antenna 420, thereceiver/transmitter 418, the receiving processor 470, the transmittingprocessor 416, the multi-antenna receiving processor 472 or themulti-antenna transmitting processor 471 is used for determining whetherto transmit the given second-type reference signal in the second giventransmission occasion.

In one embodiment, the second communication device 450 comprises atleast one processor and at least one memory, the at least one memorycomprises computer program codes; the at least one memory and thecomputer program codes are configured to be used in collaboration withthe at least one processor, the second communication device 450 at leastmonitors the first-type signaling in the first resource block set in thefirst time window in the first sub-band; and receives the firstsignaling in the first resource block; monitors the second-typesignaling in the second resource block set in the second time window inthe first sub-band; and monitors the third-type signaling in the targetresource block set in the third time window in the second sub-band.Herein, the first signaling is used by the first node for determining tomonitor the second-type signaling in the second resource block set inthe second time window in the first sub-band; the first signaling isused to determine a first index and a third index, the first index beinga first-type index, and the third index being a third-type index; anyone of the first resource block set, the second resource block set andthe target resource block set corresponds to a said first-type index anda second-type index; the first-type index corresponding to the firstresource block set and the first-type index corresponding to the secondresource block set are both equal to the first index, while thesecond-type index corresponding to the first resource block set isunequal to the second-type index corresponding to the second resourceblock set; the first-type index corresponding to the target resourceblock set is equal to a second index; the first sub-band and the secondsub-band respectively belong to a first serving cell and a secondserving cell, and the first serving cell and the second serving cellrespectively correspond to two said third-type indexes; the third-typeindex corresponding to the first serving cell is equal to the thirdindex, and the third-type index corresponding to the second serving cellis equal to a fourth index; the first index, the second index, the thirdindex and the fourth index are jointly used to determine whether thesecond-type index corresponding to the target resource block set alignswith the second-type index corresponding to the second resource blockset; the first signaling is used to determine a start of the second timewindow, a start of the third time window being the same as the start ofthe second time window.

In one embodiment, the second communication device 450 comprises amemory that stores computer readable instruction program, the computerreadable instruction program generates actions when executed by at leastone processor, which include: monitoring the first-type signaling in thefirst resource block set in the first time window in the first sub-band;and receiving the first signaling in the first resource block;monitoring the second-type signaling in the second resource block set inthe second time window in the first sub-band; and monitoring thethird-type signaling in the target resource block set in the third timewindow in the second sub-band. Herein, the first signaling is used bythe first node for determining to monitor the second-type signaling inthe second resource block set in the second time window in the firstsub-band; the first signaling is used to determine a first index and athird index, the first index being a first-type index, and the thirdindex being a third-type index; any one of the first resource block set,the second resource block set and the target resource block setcorresponds to a said first-type index and a second-type index; thefirst-type index corresponding to the first resource block set and thefirst-type index corresponding to the second resource block set are bothequal to the first index, while the second-type index corresponding tothe first resource block set is unequal to the second-type indexcorresponding to the second resource block set; the first-type indexcorresponding to the target resource block set is equal to a secondindex; the first sub-band and the second sub-band respectively belong toa first serving cell and a second serving cell, and the first servingcell and the second serving cell respectively correspond to two saidthird-type indexes; the third-type index corresponding to the firstserving cell is equal to the third index, and the third-type indexcorresponding to the second serving cell is equal to a fourth index; thefirst index, the second index, the third index and the fourth index arejointly used to determine whether the second-type index corresponding tothe target resource block set aligns with the second-type indexcorresponding to the second resource block set; the first signaling isused to determine a start of the second time window, a start of thethird time window being the same as the start of the second time window.

In one embodiment, the first communication device 410 comprises at leastone processor and at least one memory, the at least one memory comprisescomputer program codes; the at least one memory and the computer programcodes are configured to be used in collaboration with the at least oneprocessor. The first communication device 410 at least transmits thefirst-type signaling in the first resource block set in the first timewindow in the first sub-band, or, drops transmitting the first-typesignaling in the first resource block set in the first time window inthe first sub-band; transmits the first signaling in the first resourceblock; transmits the second-type signaling in the second resource blockset in the second time window in the first sub-band, or, dropstransmitting the second-type signaling in the second resource block setin the second time window in the first sub-band; transmits thethird-type signaling in the target resource block set in the third timewindow in the second sub-band, or, drops transmitting the third-typesignaling in the target resource block set in the third time window inthe second sub-band. Herein, the first signaling is used for determiningto monitor the second-type signaling in the second resource block set inthe second time window in the first sub-band; the first signaling isused to determine a first index and a third index, the first index beinga first-type index, and the third index being a third-type index; anyone of the first resource block set, the second resource block set andthe target resource block set corresponds to a said first-type index anda second-type index; the first-type index corresponding to the firstresource block set and the first-type index corresponding to the secondresource block set are both equal to the first index, while thesecond-type index corresponding to the first resource block set isunequal to the second-type index corresponding to the second resourceblock set; the first-type index corresponding to the target resourceblock set is equal to a second index; the first sub-band and the secondsub-band respectively belong to a first serving cell and a secondserving cell, and the first serving cell and the second serving cellrespectively correspond to two said third-type indexes; the third-typeindex corresponding to the first serving cell is equal to the thirdindex, and the third-type index corresponding to the second serving cellis equal to a fourth index; the first index, the second index, the thirdindex and the fourth index are jointly used to determine whether thesecond-type index corresponding to the target resource block set alignswith the second-type index corresponding to the second resource blockset; the first signaling is used to determine a start of the second timewindow, a start of the third time window being the same as the start ofthe second time window.

In one embodiment, the first communication device 410 comprises a memorythat stores computer readable instruction program, the computer readableinstruction program generates actions when executed by at least oneprocessor, which include: transmitting the first-type signaling in thefirst resource block set in the first time window in the first sub-band,or, dropping transmitting the first-type signaling in the first resourceblock set in the first time window in the first sub-band; transmittingthe first signaling in the first resource block; transmitting thesecond-type signaling in the second resource block set in the secondtime window in the first sub-band, or, dropping transmitting thesecond-type signaling in the second resource block set in the secondtime window in the first sub-band; transmitting the third-type signalingin the target resource block set in the third time window in the secondsub-band, or, dropping transmitting the third-type signaling in thetarget resource block set in the third time window in the secondsub-band. Herein, the first signaling is used for determining to monitorthe second-type signaling in the second resource block set in the secondtime window in the first sub-band; the first signaling is used todetermine a first index and a third index, the first index being afirst-type index, and the third index being a third-type index; any oneof the first resource block set, the second resource block set and thetarget resource block set corresponds to a said first-type index and asecond-type index; the first-type index corresponding to the firstresource block set and the first-type index corresponding to the secondresource block set are both equal to the first index, while thesecond-type index corresponding to the first resource block set isunequal to the second-type index corresponding to the second resourceblock set; the first-type index corresponding to the target resourceblock set is equal to a second index; the first sub-band and the secondsub-band respectively belong to a first serving cell and a secondserving cell, and the first serving cell and the second serving cellrespectively correspond to two said third-type indexes; the third-typeindex corresponding to the first serving cell is equal to the thirdindex, and the third-type index corresponding to the second serving cellis equal to a fourth index; the first index, the second index, the thirdindex and the fourth index are jointly used to determine whether thesecond-type index corresponding to the target resource block set alignswith the second-type index corresponding to the second resource blockset; the first signaling is used to determine a start of the second timewindow, a start of the third time window being the same as the start ofthe second time window.

In one embodiment, at least one of the antenna 452, the receiver 454,the receiving processor 456, the multi-antenna receiving processor 458,the controller/processor 459, the memory 460 or the data source 467 isused for monitoring the first-type signaling in the first resource blockset in the first time window in the first sub-band.

In one embodiment, at least one of the antenna 420, the transmitter 418,the transmitting processor 416, the multi-antenna transmitting processor471, the controller/processor 475 or the memory 476 is used fortransmitting the first-type signaling in the first resource block set inthe first time window in the first sub-band.

In one embodiment, at least one of the antenna 452, the receiver 454,the receiving processor 456, the multi-antenna receiving processor 458,the controller/processor 459, the memory 460 or the data source 467 isused for receiving the first signaling in the first resource block; atleast one of the antenna 420, the transmitter 418, the transmittingprocessor 416, the multi-antenna transmitting processor 471, thecontroller/processor 475 or the memory 476 is used for transmitting thefirst signaling in the first resource block.

In one embodiment, at least one of the antenna 452, the receiver 454,the receiving processor 456, the multi-antenna receiving processor 458,the controller/processor 459, the memory 460 or the data source 467 isused for monitoring the second-type signaling in the second resourceblock set in the second time window in the first sub-band.

In one embodiment, at least one of the antenna 420, the transmitter 418,the transmitting processor 416, the multi-antenna transmitting processor471, the controller/processor 475 or the memory 476 is used fortransmitting the second-type signaling in the second resource block setin the second time window in the first sub-band.

In one embodiment, at least one of the antenna 452, the receiver 454,the receiving processor 456, the multi-antenna receiving processor 458,the controller/processor 459, the memory 460 or the data source 467 isused for monitoring the third-type signaling in the target resourceblock set in the third time window in the second sub-band.

In one embodiment, at least one of the antenna 420, the transmitter 418,the transmitting processor 416, the multi-antenna transmitting processor471, the controller/processor 475 or the memory 476 is used fortransmitting the third-type signaling in the target resource block setin the third time window in the second sub-band.

In one embodiment, at least one of the antenna 452, the receiver 454,the receiving processor 456, the multi-antenna receiving processor 458,the controller/processor 459, the memory 460 or the data source 467 isused for receiving the first information block; at least one of theantenna 420, the transmitter 418, the transmitting processor 416, themulti-antenna transmitting processor 471, the controller/processor 475or the memory 476 is used for transmitting the first information block.

In one embodiment, at least one of the antenna 452, thereceiver/transmitter 454, the receiving processor 456, the transmittingprocessor 468, the multi-antenna receiving processor 458, themulti-antenna transmitting processor 457 or the controller/processor 459is used for configuring the first counter's value to be the first timelength after detecting the first signaling

In one embodiment, at least one of the receiver/transmitter 454, thereceiving processor 456, the transmitting processor 468 or thecontroller/processor 459 is used for decrementing the first counter by 1for each said second-type reference slot passed.

Embodiment 5

Embodiment 5 illustrates a flowchart of wireless transmission accordingto one embodiment of the present disclosure, as shown in FIG. 5. In FIG.5, a second node U1 and a first node U2 are communication nodes intransmission through an air interface. The steps marked by boxesF51-F510 in the figure are optional, respectively.

The second node U1 transmits a first information block in step S5101;determines whether to transmit a given first-type reference signal in afirst given transmission occasion in step S5102; and determines whetherto transmit a given second-type reference signal in a second giventransmission occasion in step S5103; receives a first signal in stepS511; transmits a first signaling in step S5104; and receives a secondsignal in step S5105; transmits a first-type signaling in a firstresource block in a second time window in a first sub-band in stepS5106; and transmits the first-type signaling in the first resourceblock in a first time window in the first sub-band in step S5107.

The first node U2 receives a first information block in step S5201;determines whether to receive a given first-type reference signal in afirst given transmission occasion in step S5202; and determines whethera first condition is fulfilled for each first-type reference signal in afirst-type reference signal set in step S5203; determines whether toreceive a given second-type reference signal in a second giventransmission occasion in step S5204; and determines whether a secondcondition is fulfilled for each second-type reference signal in asecond-type reference signal set in step S5205; transmits a first signalin step S521; receives a first signaling in step S5206; performs a firstaccess detection, and transmits a second signal after completion of thefirst access detection in step S5207; monitors a first-type signaling ina first resource block in a second time window in a first sub-band instep S5208; and monitors the first-type signaling in the first resourceblock in a first time window in the first sub-band in step S522.

In Embodiment 5, the first signal is used by the second node U1 fordetermining a first reference signal; for the monitoring on thefirst-type signaling in the first resource block in the first timewindow, the first node assumes same QCL parameters as a target referencesignal; the target reference signal is either the first reference signalor a second reference signal; whether the first time window belongs to afirst-type time window is used by the first node U2 for determining thetarget reference signal between the first reference signal and thesecond reference signal; any said first-type time window corresponds toa reference signal group, a target time window is the first-type timewindow, and the target time window corresponds to a target referencesignal group; when the first time window belongs to the target timewindow, whether the first reference signal and one reference signal fromthe target reference signal group are QCLed is used by the first node U2for determining the target reference signal between the first referencesignal and the second reference signal.

In one embodiment, the first node U2 is the first node in the presentdisclosure.

In one embodiment, the second node U1 is the second node in the presentdisclosure.

In one embodiment, an air interface between the second node U1 and thefirst node U2 includes a radio interface between a base station and aUE.

In one embodiment, an air interface between the second node U1 and thefirst node U2 includes a radio interface between UEs.

In one embodiment, the second node U1 is a maintenance base station fora serving cell of the first node U2.

In one embodiment, whether the first time window belongs to a first-typetime window is used by the second node U2 for determining the targetreference signal between the first reference signal and the secondreference signal.

In one embodiment, when the first time window belongs to the target timewindow, whether the first reference signal is QCLed with a referencesignal in the target reference signal group is used by the second nodeU1 for determining the target reference signal between the firstreference signal and the second reference signal.

In one embodiment, the first signal is transmitted on a PRACH.

In one embodiment, the first signal is transmitted on a Physical UplinkControl Channel (PUCCH).

In one embodiment, the first signal is transmitted on a Physical UplinkShared CHannel (PUSCH).

In one embodiment, the first signal is transmitted on a PhysicalSidelink Shared Channel (PSSCH).

In one embodiment, the first-type signaling is transmitted on a PDCCH.

In one embodiment, the first-type signaling is transmitted on a PhysicalSidelink Control Channel (PSCCH).

In one embodiment, steps marked by the box F51 in FIG. 5 exist; thefirst information block is used by the first node for determining thefirst resource block.

In one embodiment, the first information block is carried by a higherlayer signaling

In one embodiment, the first information block is carried by an RRCsignaling

In one embodiment, the first information block is carried by a MAC CEsignaling

In one embodiment, the first information block is jointly carried by anRRC signaling and a MAC CE.

In one embodiment, the first information block comprises information inall or part of fields of an Information Element (IE).

In one embodiment, the first information block comprises information inall or part of fields of a ControlResourceSet IE.

In one embodiment, the first information block comprises information inall or part of fields of a SearchSpace IE.

In one embodiment, the first information block comprises configurationinformation of a search space set to which the first resource blockbelongs.

In one embodiment, the first information block comprises configurationinformation of a CORESET associated with the first resource block.

In one embodiment, the first information block is transmitted on aPhysical Downlink Shared CHannel (PDSCH).

In one embodiment, the first information block is transmitted on aPSSCH.

In one embodiment, steps marked by both the box F52 and the box F53 inFIG. 5 exist; whether each first-type reference signal comprised in thefirst-type reference signal set fulfills the first condition is used bythe first node U2 for determining whether the first signal istransmitted; the given first-type reference signal is any first-typereference signal in the first-type reference signal set, a firsttransmission occasion set is reserved for the given first-type referencesignal, and the first given transmission occasion is a transmissionoccasion in the first transmission occasion set.

In one embodiment, steps marked by both the box F54 and the box F55 inFIG. 5 exist; a second-type reference signal subset is composed ofsecond-type reference signals comprised in the second-type referencesignal set that fulfill the second condition, and the first referencesignal is a second-type reference signal in the second-type referencesignal subset; a given second-type reference signal is any second-typereference signal comprised in the second-type reference signal set, anda second transmission occasion set is reserved for the given second-typereference signal; the second given transmission occasion is onetransmission occasion in the second transmission occasion set.

In one embodiment, steps marked by the box F56 in FIG. 5 exist; thefirst time window belongs to the target time window; the first signalingis used by the first node U2 for determining the target time window andthe target reference signal group.

In one embodiment, the first signaling is transmitted on a PDCCH.

In one embodiment, the first signaling is transmitted on a PSCCH.

In one embodiment, steps marked by the box F57 in FIG. 5 exist; thefirst time window belongs to the target time window; the second signalis used by the second node U1 for determining the target time window andthe target reference signal group.

In one embodiment, the second signal is transmitted on a PUSCH.

In one embodiment, steps marked by both the box F58 and the box F59 inFIG. 5 exist.

In one embodiment, the step marked by the box F58 in FIG. 5 does notexist, and the step marked by the box F59 exists.

In one embodiment, for the monitoring on the first-type signaling in thefirst resource block in the second time window, the first node assumessame QCL parameters as the second reference signal; an end of the secondtime window is no later than a start of the first time window.

In one embodiment, the first resource block belongs to a first searchspace set, and the second time window is a latest monitoring occasion ofthe first search space set earlier than the first signal.

In one embodiment, the first resource block belongs to a first searchspace set, and the second time window is a latest monitoring occasion ofthe first search space set earlier than a first time point; the firsttime point is a start time of a fourth slot subsequent to a slot towhich the first signal belongs.

In one embodiment, neither the step marked by the box F58 nor the stepmarked by the box F59 in FIG. 5 exists.

In one embodiment, the step marked by the box F510 in FIG. 5 exists.

In one embodiment, the step marked by the box F510 in FIG. 5 does notexist.

In one embodiment, the above method used in the first node for wirelesscommunications comprises:

a physical layer of the first node sends first indication information toa higher layer of the first node;

the physical layer of the first node receives second indicationinformation from a higher layer of the first node;

herein, the first indication information indicates a beam failureinstance, and the second indication information triggers transmission ofthe first signal.

In one embodiment, when and only when the first node determines thateach first-type reference signal in the first-type reference signal setfulfills the first condition will the physical layer of the first nodesend the first indication information to the higher layer of the firstnode.

In one embodiment, when and only when the first node determines thateach first-type reference signal in the first-type reference signal setfulfills the first condition and that at least one second-type referencesignal in the second-type reference signal set fulfills the secondcondition will the physical layer of the first node send the firstindication information to the higher layer of the first node; the firstreference signal is a second-type reference signal in the second-typereference signal set.

In one embodiment, the second indication information indicates the firstreference signal.

In one embodiment, the above method used in the first node for wirelesscommunications comprises:

a higher layer of the first node initializes a first counter as 0;

after receiving a piece of indication information indicating a beamfailure instance, the higher layer of the first node starts or restartsa first timer, and increments the first counter by 1;

if the first counter is greater than or equal to a first counterthreshold, the higher layer of the first node sends the secondindication information to the physical layer of the first node;

if the first counter is expired, the higher layer of the first nodeclears the first counter.

In one embodiment, the first counter threshold comprises information ina beamFailureInstanceMaxCount field in a RadioLinkMonitoringConfig IE.

In one embodiment, an initial value of the first counter is configuredby a higher layer parameter beamFailureDetectionTimer.

In one embodiment, a name of a higher layer signaling for configuringthe first timer includes RadioLinkMonitoring.

In one embodiment, the above method used in the first node for wirelesscommunications comprises:

starting a second timer after transmitting the first signal;

stopping the second timer when the current time does not belong to thefirst-type time window;

recovering the second timer when the current time belongs to thefirst-type time window;

transmitting a third signal if the first-type signaling is not detectedstarting from a first time point to the expiration of the second timer;the first time point is a start time of a fourth slot subsequent to aslot to which the first signal belongs.

In one embodiment, an initial value of the second timer is configured bya higher layer parameter beamFailureRecoveryTimer.

In one embodiment, a name of a higher layer signaling for configuringthe second timer includes BeamFailureRecovery.

In one embodiment, the third signal comprises a baseband signal.

In one embodiment, the third signal comprises a radio signal.

In one embodiment, the third signal comprises a radio frequency signal.

In one embodiment, the third signal and the first signal carry sameinformation.

In one embodiment, the third signal and the first signal are transmittedon a same BWP.

In one embodiment, the third signal and the first signal are transmittedon different BWPs.

In one embodiment, the third signal comprises a RACH Preamble.

In one embodiment, the third signal comprises a BRR.

In one embodiment, the third signal comprises a BFRQ.

In one embodiment, the third signal and the first signal occupy a samePRACH resource.

In one embodiment, the third signal and the first signal occupydifferent PRACH resources.

In one embodiment, the above method used in the first node for wirelesscommunications comprises:

receiving a second signaling in a second resource block;

herein, the second resource block is a search space set, and the secondresource block is identified by a recovery SearchSpaceId; the first timewindow is later than the second signaling

In one embodiment, a time interval between a start of the first timewindow and a last multicarrier symbol occupied by the second signalingis no smaller than Q1 multicarrier symbols, Q1 being a positive integergreater than 1.

In one subembodiment, Q1 is equal to 28.

In one subembodiment, Q1 is equal to 27.

In one embodiment, the second signaling comprises DCI with CRC scrambledby a C-RNTI or an MCS-C-RNTI.

In one embodiment, the second signaling is transmitted on the firstsub-band.

In one embodiment, the second signaling is transmitted on a sub-bandother than the first sub-band.

In one embodiment, the second signaling and the first sub-band belong toa same serving cell.

Embodiment 6

Embodiment 6 illustrates a schematic diagram of a given time windowaccording to one embodiment of the present disclosure; as shown in FIG.6. In Embodiment 6, the given time window is one of the first timewindow, the target time window, any said first-type time window or thesecond time window.

In one embodiment, the given time window is the first time window.

In one embodiment, the given time window is the target time window.

In one embodiment, the given time window is any said first-type timewindow.

In one embodiment, the given time window is the second time window.

In one embodiment, the given time window is a contiguous time duration.

In one embodiment, the given time window comprises a positive integernumber of multicarrier symbol(s).

In one embodiment, the given time window comprises a positive integernumber of consecutive multicarrier symbols.

In one embodiment, the given time window comprises a positive integernumber of slot(s).

In one embodiment, the given time window is of a length no greater than10000ms.

In one embodiment, the given time window is of a length no greater than10ms.

In one embodiment, the first time window is a slot.

In one embodiment, the first time window is a monitoring occasion of asearch space set to which the first resource block belongs.

In one embodiment, the second time window is a monitoring occasion of asearch space set to which the first resource block belongs.

In one embodiment, the first time window is a monitoring occasion of thefirst resource block.

In one embodiment, any said first-type time window comprises a Channeloccupancy duration.

In one embodiment, any said first-type time window comprises a Channeloccupancy duration occupied by a transmitter of the first-type signaling

In one embodiment, there is one said first-type time window comprising aChannel occupancy duration occupied by a transmitter of the first-typesignaling

In one embodiment, any said first-type time window comprises a Channeloccupancy duration occupied by the first node.

In one embodiment, there is one said first-type time window comprising aChannel occupancy duration occupied by the first node.

In one embodiment, any said first-type time window comprises a Channeloccupancy duration occupied by a transmitter of the first-type signalingor the first node.

In one embodiment, any said first-type time window belongs to a Channeloccupancy duration.

In one embodiment, any said first-type time window belongs to a Channeloccupancy duration occupied by a transmitter of the first-type signaling

In one embodiment, there is one said first-type time window belonging toa Channel occupancy duration occupied by a transmitter of the first-typesignaling

In one embodiment, any said first-type time window belongs to a Channeloccupancy duration occupied by the first node.

In one embodiment, there is one said first-type time window belonging toa Channel occupancy duration occupied by the first node.

In one embodiment, any said first-type time window belongs to a Channeloccupancy duration occupied by a transmitter of the first-type signalingor the first node.

In one embodiment, a transmitter of the first-type signaling can occupythe first sub-band in any said first-type time window.

In one embodiment, a transmitter of the first-type signaling occupiesthe first sub-band in any said first-type time window.

In one embodiment, a transmitter of the first-type signaling considersthat the first sub-band is idle in any said first-type time window.

In one embodiment, a transmitter of the first-type signaling transmits aradio signal to the first node in any said first-type time window.

In one embodiment, a transmitter of the first-type signaling transmits aradio signal to the first node on a first serving cell in any saidfirst-type time window, the first sub-band belonging to the firstserving cell.

In one embodiment, a transmitter of the first-type signaling occupies afirst serving cell in any said first-type time window, the firstsub-band belonging to the first serving cell.

In one embodiment, a transmitter of the first-type signaling transmits aradio signal to the first node on a serving cell comprised in a firstserving cell group in any said first-type time window; the serving cellto which the first sub-band belongs is a part of the first serving cellgroup.

In one embodiment, a transmitter of the first-type signaling occupiesall serving cells comprised in a first serving cell group in any saidfirst-type time window; the serving cell to which the first sub-bandbelongs is a part of the first serving cell group.

In one embodiment, the first serving cell group comprises more than oneserving cell.

In one embodiment, any serving cell in the first serving cell group isadded by the first node.

In one embodiment, the first serving cell group is configured by ahigher layer parameter.

In one embodiment, a name of a higher layer parameter used forconfiguring the first serving cell group includes searchSpaceSwitching.

In one embodiment, a higher layer parameter used for configuring thefirst serving cell group comprises information in asearchSpaceSwitchingGroupList-r16 field in a PDCCH-Config IE.

In one embodiment, the handovers of all serving cells comprised in thefirst serving cell group between a search space set group 0 and a searchspace set group 1 are performed simultaneously.

Embodiment 7

Embodiment 7 illustrates a schematic diagram of a first resource blockaccording to one embodiment of the present disclosure; as shown in FIG.7.

In one embodiment, the first resource block occupies a positive integernumber of RE(s) in time-frequency domain

In one embodiment, an RE occupies a multicarrier symbol in time domainand a subcarrier in frequency domain

In one embodiment, the multicarrier symbol is an Orthogonal FrequencyDivision Multiplexing (OFDM) symbol.

In one embodiment, the multicarrier symbol is a Single Carrier-FrequencyDivision Multiple Access (SC-FDMA) symbol.

In one embodiment, the multicarrier symbol is a Discrete FourierTransform Spread OFDM (DFT-S-OFDM) symbol.

In one embodiment, the first resource block occupies a positive integernumber of multicarrier symbol(s) in time domain.

In one embodiment, the first resource block occupies a positive integernumber of RB(s) in frequency domain.

In one embodiment, the first resource block comprises a search spaceset.

In one embodiment, the first resource block is a search space set.

In one embodiment, the first resource block comprises a part of a searchspace set that occurs in a monitoring occasion.

In one embodiment, the first resource block is a part of a search spaceset that occurs in a monitoring occasion.

In one embodiment, the first resource block comprises a part of a searchspace set in the first time window.

In one embodiment, the first resource block comprises one or more PDCCHcandidates.

In one embodiment, the first resource block comprises all or part ofPDCCH candidates in a search space set.

In one embodiment, the first resource block comprises a CORESET.

In one embodiment, the first resource block comprises a part of aCORESET in the first time window.

In one embodiment, the first resource block occurs periodically in timedomain

In one embodiment, the first resource block occurs multiple times intime domain

In one embodiment, the first resource block occurs only once in timedomain.

In one embodiment, an index of a CORESET associated with the firstresource block is equal to 0.

In one embodiment, an index of a CORESET associated with the firstresource block is not equal to 0.

In one embodiment, a search space set to which the first resource blockbelongs is identified by a recovery SearchSpaceId.

In one embodiment, a search space set to which the first resource blockbelongs comprises a Common search space (CSS).

In one embodiment, a search space set to which the first resource blockbelongs is a Type0-PDCCH CSS.

In one embodiment, a search space set to which the first resource blockbelongs comprises a UE-specific search space (USS).

In one embodiment, a search space set to which the first resource blockbelongs is not configured with a higher layer parametersearchSpaceGroupIdList-r16.

Embodiment 8

Embodiment 8 illustrates a schematic diagram of whether a first timewindow belongs to a first-type time window being used to determine atarget reference signal according to one embodiment of the presentdisclosure; as shown in FIG. 8. In Embodiment 8, when the first timewindow does not belong to any said first-type time window, the targetreference signal is the first reference signal.

In one embodiment, if the first time window does not belong to any saidfirst-type time window, the target reference signal is the firstreference signal.

In one embodiment, when the first time window belongs to the target timewindow of the first-type time windows, whether the first referencesignal is QCLed with a reference signal in the target reference signalgroup is used for determining the target reference signal between thefirst reference signal and the second reference signal.

In one embodiment, if the first time window belongs to the target timewindow of the first-type time windows, whether the first referencesignal is QCLed with a reference signal in the target reference signalgroup is used for determining the target reference signal between thefirst reference signal and the second reference signal.

In one embodiment, if the first time window belongs to the target timewindow of the first-type time windows, whether the first referencesignal is QCLed with a reference signal in the target reference signalgroup, corresponding to a QCL-TypeD is used for determining the targetreference signal between the first reference signal and the secondreference signal.

In one embodiment, if the first time window belongs to the target timewindow and the first reference signal is QCLed with a reference signalin the target reference signal group, the target reference signal is thefirst reference signal.

In one embodiment, if the first time window belongs to the target timewindow and the first reference signal is QCLed with a reference signalin the target reference signal group, corresponding to QCL-TypeD, thetarget reference signal is the first reference signal.

In one embodiment, if the first time window belongs to the target timewindow of the first-type time windows and the first reference signal isnot QCL with any reference signal in the target reference signal group,the target reference signal is the second reference signal.

In one embodiment, if the first time window belongs to the target timewindow of the first-type time windows and the first reference signal isnot QCL-TypeD with any reference signal in the target reference signalgroup, the target reference signal is the second reference signal.

In one embodiment, if the first time window belongs to the target timewindow, and the first reference signal is QCLed with a reference signalin the target reference signal group, and the second reference signal isalso QCL with a reference signal in the target reference signal group,the target reference signal is the first reference signal.

In one embodiment, if the first time window belongs to the target timewindow, when and only when at least one of the first reference signal orthe second reference signal is QCLed with a reference signal in thetarget reference signal group will the first node monitor the first-typesignaling in the first resource block in the first time window in thefirst sub-band.

In one embodiment, if the first time window belongs to the target timewindow, when and only when at least one of the first reference signal orthe second reference signal is QCL-TypeD with a reference signal in thetarget reference signal group will the first node monitor the first-typesignaling in the first resource block in the first time window in thefirst sub-band.

In one embodiment, if the first time window belongs to the target timewindow, and the first reference signal is not QCL with any referencesignal in the target reference signal group, and the second referencesignal is not QCL with any reference signal in the target referencesignal group, the first node drops monitoring the first-type signalingin the first resource block in the first time window in the firstsub-band.

In one embodiment, if the first time window belongs to the target timewindow, and the first reference signal is not QCL-TypeD with anyreference signal in the target reference signal group, and the secondreference signal is not QCL-TypeD with any reference signal in thetarget reference signal group, the first node drops monitoring thefirst-type signaling in the first resource block in the first timewindow in the first sub-band.

Embodiment 9

Embodiment 9 illustrates a schematic diagram of a first signaling beingused to determine a target time window and a target reference signalgroup according to one embodiment of the present disclosure; as shown inFIG. 9.

In one embodiment, the first signaling is the first-type signaling

In one embodiment, the first signaling is not the first-type signaling

In one embodiment, the first signaling comprises a physical layersignaling

In one embodiment, the first signaling comprises a dynamic signaling

In one embodiment, the first signaling comprises an L1 signaling

In one embodiment, the first signaling comprises DCI.

In one embodiment, the first signaling comprises one or more fields of apiece of DCI.

In one embodiment, the first signaling comprises one or more fields of apiece of SCI.

In one embodiment, the first signaling comprises an RRC signaling

In one embodiment, a format of the first signaling is DCI Format 2_0.

In one embodiment, a format of the first signaling is one of DCI Format0_0, DCI Format 0_1, DCI Format 0_2, DCI Format 1_0, DCI Format 1_1, DCIFormat 1_2, DCI Format 2_0, DCI Format 2_1, DCI Format 2_2, DCI Format2_3, DCI Format 2_4, DCI Format 2_5 or DCI Format 2_6.

In one embodiment, a time-frequency resource occupied by the firstsignaling and the first resource block belong to a same search spaceset.

In one embodiment, a time-frequency resource occupied by the firstsignaling and the first resource block belong to different search spacesets.

In one embodiment, the first signaling is transmitted on LicensedSpectrum.

In one embodiment, the first signaling is transmitted on UnlicensedSpectrum.

In one embodiment, the first signaling belongs to the first sub-band infrequency domain

In one embodiment, the first signaling and the first sub-band belong toa same serving cell.

In one embodiment, the first signaling does not belong to the firstsub-band in frequency domain

In one embodiment, the first signaling and the first sub-band belong todifferent serving cells.

In one embodiment, a serving cell to which the first signaling belongsand a serving cell to which the first sub-band belongs are both parts ofa first serving cell group.

In one embodiment, a time-domain resource occupied by the firstsignaling is earlier than the target time window.

In one embodiment, the first signaling comprises a first bit string, thefirst bit string indicating the target time window.

In one embodiment, the first bit string indicates a start and a lengthof the target time window.

In one embodiment, the first bit string indicates a channel occupancyduration.

In one embodiment, the first bit string indicates a Slot FormatIndicator (SF1).

In one embodiment, a time-domain resource occupied by the firstsignaling is used to determine a start of the target time window.

In one embodiment, a start of the target time window is an end time fora time unit occupied by the first signaling.

In one embodiment, a start of the target time window is a start time ofan earliest time unit following at least P1 symbols after a lastmulticarrier symbol occupied by the first signaling, P1 being a positiveinteger greater than 1.

In one embodiment, upon reception of the first signaling, the first nodestarts a third timer, and a time of expiration of the third timer isused to determine an end of the target time window.

In one subembodiment, an initial value of the third timer is configuredby a higher layer signaling

In one subembodiment, an initial value of the third timer is configuredby a higher layer parameter of searchSpaceSwitchingTimer-r16.

In one subembodiment, the end of the target time window is the time ofexpiration of the third timer.

In one subembodiment, the end of the target time window is a start timeof an earliest time unit following at least P1 symbols after the timeunit of expiration of the third timer, P1 being a positive integergreater than 1.

In one embodiment, the time unit is a slot.

In one embodiment, the time unit is a sub-slot.

In one embodiment, the time unit comprises a positive integer number of(more than one) consecutive multicarrier symbols.

In one embodiment, the number of multicarrier symbols comprised by thetime unit is configured by a higher layer signaling.

In one embodiment, the first signaling indicates the target referencesignal group.

In one embodiment, the first signaling comprises a bit field, the bitfield indicating each reference signal in the target reference signalgroup.

In one embodiment, a DMRS antenna port of the first signaling is used todetermine the target reference signal group.

In one embodiment, any reference signal in the target reference signalgroup and a DMRS antenna port of the first signaling are QCL.

In one embodiment, any reference signal in the target reference signalgroup and a DMRS antenna port of the first signaling are QCL,corresponding to QCL-TypeD.

In one embodiment, a time-frequency resource occupied by the firstsignaling is used to determine the target reference signal group.

In one embodiment, a Transmission Configuration Indicator (TCI) statecorresponding to a CORESET to which the first signaling belongsindicates a fourth reference signal; any reference signal in the targetreference signal group is QCLed with the fourth reference signal.

In one subembodiment, any reference signal in the target referencesignal group is QCLed with the fourth reference signal, corresponding toQCL-TypeD.

In one embodiment, the first signaling is earlier than the first timewindow in time domain

In one embodiment, the first signaling is later than the first timewindow in time domain

In one embodiment, the first signaling and the first time window areoverlapping in time domain

Embodiment 10

Embodiment 10 illustrates a schematic diagram of a first accessdetection and a second signal according to one embodiment of the presentdisclosure; as shown in FIG. 10. In Embodiment 10, the first nodetransmits the second signal after completion of the first accessdetection.

In one embodiment, the first access detection is Listen Before Talk(LBT).

In one embodiment, the first access detection is Category 4 LBT.

In one embodiment, the first access detection is Category 2 LBT.

In one embodiment, the specific way of implementation of LBT can befound in 3GPP TR36.889.

In one embodiment, the first access detection is Clear ChannelAssessment (CCA).

In one embodiment, the specific way of implementation of CCA can befound in 3GPP TR36.889.

In one embodiment, the first access detection is implemented in a waydefined by 3GPP TS37.213, section 4.

In one embodiment, the first access detection is a UL Channel accessprocedure.

In one embodiment, the specific way of implementation of UL Channelaccess procedure can be found in 3GPP TS37.213, section 4.2.

In one embodiment, the first access detection is a Type 1 UL Channelaccess procedure.

In one embodiment, the first access detection is a Type 2 UL Channelaccess procedure.

In one embodiment, the first access detection is performed on the firstsub-band.

In one embodiment, the first access detection is performed on a secondsub-band, the second sub-band comprising the first sub-band.

In one embodiment, the first access detection is performed on a firstserving cell, the first sub-band belonging to the first serving cell.

In one embodiment, the first access detection is used by the first nodefor determining that the first sub-band is idle.

In one embodiment, the first node determines that the first sub-band isidle at an end time of the first access detection.

In one embodiment, the first access detection is used to determine thatthe first sub-band can be occupied by the first node in the target timewindow.

In one embodiment, the first access detection is used to determine thatthe first sub-band can be occupied by a transmitter of the first-typesignaling in the target time window.

In one embodiment, the first access detection is used to determinewhether the second signal can be transmitted.

In one embodiment, the first access detection is used to determine thatthe second signal can be transmitted.

In one embodiment, the first node determines a success of LBT at the endtime of the first access detection.

In one embodiment, the end time of the first access detection is used todetermine a start of the target time window.

In one embodiment, the end time of the first access detection is a startof the target time window.

In one embodiment, a length of the target time window is fixed.

In one embodiment, the first node transmits the second signalimmediately after completion of the first access detection.

In one embodiment, the second signal comprises a baseband signal.

In one embodiment, the second signal comprises a radio signal.

In one embodiment, the second signal comprises a radio frequency signal.

In one embodiment, the second signal is an uplink transmission based onconfigured grant.

In one embodiment, the second signal is an uplink transmission based ondynamic grant.

In one embodiment, an end time of the second signal is a start of thetarget time window.

In one embodiment, the second signal indicates the target time window.

In one embodiment, the second signal indicates a time interval between astart of the target time window and a time unit occupied by the secondsignal.

In one embodiment, the second signal indicates a length of the targettime window.

In one embodiment, the second signal comprises Configured Grant(CG)-UCI.

In one embodiment, the second signal comprises a first field, and thefirst field comprised by the second signal indicates the target timewindow; the first field comprises all or part of information in aChannel Occupancy Time (COT) sharing information field.

In one embodiment, the second signal comprises a second field, and thesecond field in the second signal indicates the target reference signalgroup.

In one embodiment, the first node uses a same spatial filter to performthe first access detection and receive the target reference signalgroup.

In one embodiment, the first node uses a same spatial filter to performthe first access detection and transmit the target reference signalgroup.

In one embodiment, the first node uses a same spatial filter to transmitthe second signal and receive the target reference signal group.

In one embodiment, the first node uses a same spatial filter to transmitthe second signal and the target reference signal group.

In one embodiment, the target reference signal group and a DMRS antennaport of the second signal are QCL.

In one embodiment, the target reference signal group and a DMRS antennaport of the second signal are QCL, corresponding to QCL-TypeD.

In one embodiment, the second signal is earlier than the first timewindow in time domain

In one embodiment, the second signal is later than the first time windowin time domain

In one embodiment, the second signal and the first time window areoverlapping in time domain

Embodiment 11

Embodiment 11 illustrates a schematic diagram of determining whether agiven first-type reference signal fulfills a first condition accordingto one embodiment of the present disclosure; as shown in FIG. 11. InEmbodiment 11, when the given first-type reference signal fulfillseither of a first condition subset and a second condition subset, thegiven first-type reference signal fulfills the first condition; thefirst condition subset comprises: a number of transmission occasionscomprised by the first occasion subset is greater than the firstthreshold; the second condition subset comprises: the first receivedquality is lower than the second threshold; the first node dropsreceiving the given first-type reference signal in the first occasionsubset but receives the given first-type reference signal in the secondoccasion subset; a measurement on the given first-type reference signalin the second occasion subset is used to determine the first receivedquality, the first occasion subset and the second occasion subset bothbeing subsets of the first transmission occasion.

In one embodiment, if the given first-type reference signal fulfills oneof the first condition subset and the second condition subset, the givenfirst-type reference signal fulfills the first condition.

In one embodiment, if the given first-type reference signal fulfills thefirst condition subset, the given first-type reference signal fulfillsthe first condition.

In one embodiment, if the given first-type reference signal fulfills thesecond condition subset, the given first-type reference signal fulfillsthe first condition.

In one embodiment, when the given first-type reference signal fulfillsneither the first condition subset nor the second condition subset, thegiven first-type reference signal does not fulfill the first condition.

In one embodiment, if the given first-type reference signal fulfillsneither the first condition subset nor the second condition subset, thegiven first-type reference signal does not fulfill the first condition.

In one embodiment, the first-type reference signal set comprises one ormore first-type reference signals.

In one embodiment, any first-type reference signal in the first-typereference signal set is a CSI-RS or an SSB.

In one embodiment, the first-type reference signal set is configured bya higher-layer parameter of failureDetectionResources or a higher-layerparameter of failureDetectionResourcesToAddModList.

In one embodiment, the first-type reference signal set is configured bya higher-layer signaling

In one embodiment, a higher-layer signaling for configuring thefirst-type reference signal set comprises information in all or part offields of a RadioLinkMonitoring IE.

In one embodiment, a higher-layer signaling for configuring thefirst-type reference signal set comprises information in all or part offields of a ControlResourceSet IE.

In one embodiment, the first-type reference signal set only comprisesone first-type reference signal, the first-type reference signal beingthe given first-type reference signal.

In one embodiment, the first-type reference signal set comprises morethan one first-type reference signal, and the given first-type referencesignal is any first-type reference signal in the first-type referencesignal set.

In one embodiment, any first-type reference signal in the first-typereference signal set occurs periodically in time domain.

In one embodiment, any first-type reference signal in the first-typereference signal set occurs multiple times in time domain.

In one embodiment, any first-type reference signal in the first-typereference signal set is transmitted on the first sub-band.

In one embodiment, a first-type reference signal in the first-typereference signal set is transmitted on a sub-band different from thefirst sub-band.

In one embodiment, any first-type reference signal in the first-typereference signal set is transmitted on Unlicensed Spectrum.

In one embodiment, any two first-type reference signals in thefirst-type reference signal set are not QCLed.

In one embodiment, any two first-type reference signals in thefirst-type reference signal set are not QCLed, let alone correspondingto QCL-TypeD.

In one embodiment, the given transmission occasion set comprises onetransmission occasion.

In one embodiment, the given transmission occasion set comprises apositive integer number of (more than one) transmission occasions.

In one embodiment, any transmission occasion in the given transmissionoccasion set is a contiguous duration.

In one embodiment, any transmission occasion in the given transmissionoccasion set comprises a positive integer number of multicarriersymbol(s).

In one embodiment, any two transmission occasions in the giventransmission occasion set are mutually orthogonal in time domain.

In one embodiment, each transmission occasion in the given transmissionoccasion set occurs periodically in time domain.

In one embodiment, each transmission occasion in the given transmissionoccasion set occurs at equal intervals in time domain.

In one embodiment, each transmission occasion in the given transmissionoccasion set occurs at unequal intervals in time domain.

In one embodiment, the given transmission occasion set is the firsttransmission occasion set or the second transmission occasion set.

In one embodiment, the given transmission occasion set is the firsttransmission occasion set.

In one embodiment, the given transmission occasion set is the secondtransmission occasion set.

In one embodiment, the first occasion subset comprises all or part oftransmission occasions in the first transmission occasion set.

In one embodiment, any transmission occasion comprised by the firstoccasion subset belongs to the first transmission occasion set.

In one embodiment, the second occasion subset comprises all or part oftransmission occasions in the first transmission occasion set.

In one embodiment, any transmission occasion comprised by the secondoccasion subset belongs to the first transmission occasion set.

In one embodiment, there isn't any transmission occasion comprised bythe first transmission occasion set that belongs to both the firstoccasion subset and the second occasion subset.

In one embodiment, the first occasion subset is empty.

In one embodiment, the number of transmission occasions comprised by thefirst occasion subset is greater than 0.

In one embodiment, the second occasion subset is empty.

In one embodiment, the number of transmission occasions comprised by thesecond occasion subset is greater than 0.

In one embodiment, all transmission occasions comprised by the firsttransmission occasion set belong to a first time interval in timedomain.

In one embodiment, each transmission occasion comprised by the secondoccasion subset belongs to a first time interval in time domain.

In one embodiment, the first time interval is a contiguous duration.

In one embodiment, a length of the first time interval isT_(Evaluate_BFD_SSB) ms or T_(Evaluate_BFD_CSI-RS) ms.

In one embodiment, specific definitions of the T_(Evaluate_BFD_SSB) andT_(Evaluate_BFD_CSI-RS) can be found in 3GPP TS38.133.

In one embodiment, the first threshold is a positive integer greaterthan 1.

In one embodiment, the first threshold is fixed.

In one embodiment, the first threshold is in no need of configuration.

In one embodiment, the first threshold is configured by a higher layersignaling.

In one embodiment, a Reference Signal Received Power (RSRP) of the givenfirst-type reference signal received in the second occasion subset isused to determine the first received quality.

In one embodiment, the first received quality is equal to an RSRP of thegiven first-type reference signal received in the second occasionsubset.

In one embodiment, a Signal-to-noise and interference ratio (SINR) ofthe given first-type reference signal received in the second occasionsubset is used to determine the first received quality.

In one embodiment, the first received quality is equal to a SINR of thegiven first-type reference signal received in the second occasionsubset.

In one embodiment, the first received quality is obtained by either theRSRP or SINR of the given first-type reference signal received in thesecond occasion subset based on the look-up table method.

In one embodiment, the first received quality is a RSRP.

In one embodiment, the first received quality is a L1-RSRP.

In one embodiment, the first received quality is a SINR.

In one embodiment, the first received quality is a L1-SINR.

In one embodiment, the first received quality is a Reference SignalReceived Quality (RSRQ).

In one embodiment, the first received quality is a Signal-to-Noise Ratio(SNR).

In one embodiment, the first received quality is a BLock Error Rate(BLER).

In one embodiment, the second threshold is a real number.

In one embodiment, the second threshold is a non-negative real number.

In one embodiment, the second threshold is a non-negative real number nogreater than 1.

In one embodiment, the second threshold is Q_(out_LR).

In one embodiment, the second threshold is Q_(out_LR_SSB) orQ_(out_LR_CSI-RS).

In one embodiment, specific definitions of the Q_(out_LR),Q_(out_LR_SSB) and Q_(out_LR_CSI-RS) can be found in 3GPP TS38.133.

In one embodiment, the second threshold is determined by a higher layerparameter of rlmInSyncOutOfSyncThreshold.

In one embodiment, the phrase that a first received quality is lowerthan a second threshold includes a meaning that the first receivedquality is one of RSRP, SINR, RSRQ or SNR, and the first receivedquality is smaller than the second threshold.

In one embodiment, the phrase that a first received quality is lowerthan a second threshold includes a meaning that the first receivedquality is BLER, and the first received quality is greater than thesecond threshold.

In one embodiment, the above-mentioned method in a first node used forwireless communications comprises at least one of:

dropping reception of the given first-type reference signal in the firstoccasion subset; or

receiving the given first-type reference signal in the second occasionsubset.

In one embodiment, the above-mentioned method in a second node used forwireless communications comprises at least one of:

dropping transmission of the given first-type reference signal in thefirst occasion subset; or

transmitting the given first-type reference signal in the secondoccasion subset.

Embodiment 12

Embodiment 12 illustrates a schematic diagram of determining whether agiven second-type reference signal fulfills a second condition accordingto one embodiment of the present disclosure; as shown in FIG. 12. InEmbodiment 12, when the given second-type reference signal fulfills boththe third condition subset and the fourth condition subset, the givensecond-type reference signal fulfills the second condition; the thirdcondition subset comprises: a number of transmission occasions comprisedby the third occasion subset is greater than the third threshold; thefourth condition subset comprises: the second channel quality is greaterthan or equal to the fourth threshold; the first node receives the givensecond-type reference signal in the third occasion subset, the thirdoccasion subset being a subset of the second transmission occasion set;a measurement on the given second-type reference signal in the thirdoccasion subset is used to determine the second channel quality.

In one embodiment, if the given second-type reference signal fulfillsboth the third condition subset and the fourth condition subset, thegiven second-type reference signal fulfills the second condition.

In one embodiment, when the given second-type reference signal does notfulfill either of the third condition subset and the fourth conditionsubset, the given second-type reference signal does not fulfill thesecond condition.

In one embodiment, if the given second-type reference signal does notfulfill either of the third condition subset and the fourth conditionsubset, the given second-type reference signal does not fulfill thesecond condition.

In one embodiment, if the given second-type reference signal does notfulfill the third condition subset, the given second-type referencesignal does not fulfill the second condition.

In one embodiment, if the given second-type reference signal does notfulfill the fourth condition subset, the given second-type referencesignal does not fulfill the second condition.

In one embodiment, the second-type reference signal set comprises one ormore second-type reference signals.

In one embodiment, any second-type reference signal in the second-typereference signal set is a CSI-RS or an SSB.

In one embodiment, the second-type reference signal set is configured bya higher layer signaling.

In one embodiment, the second-type reference signal set is configured bya higher layer parameter of candidateBeamRSList orcandidateBeamRSListExt-r16.

In one embodiment, a higher layer signaling for configuring thesecond-type reference signal set comprises information in all or part offields of a BeamFailureRecoveiyConfig IE.

In one embodiment, the second-type reference signal set only comprisesone second-type reference signal, the second-type reference signal beingthe given second-type reference signal.

In one embodiment, the second-type reference signal set comprises morethan one second-type reference signal, and the given second-typereference signal is any second-type reference signal in the second-typereference signal set.

In one embodiment, any second-type reference signal in the second-typereference signal set occurs periodically in time domain.

In one embodiment, any second-type reference signal in the second-typereference signal set occurs multiple times in time domain.

In one embodiment, any second-type reference signal in the second-typereference signal set is transmitted on the first sub-band.

In one embodiment, a second-type reference signal in the second-typereference signal set is transmitted on a sub-band different from thefirst sub-band.

In one embodiment, any second-type reference signal in the second-typereference signal set is transmitted on Unlicensed Spectrum.

In one embodiment, any two second-type reference signals in thesecond-type reference signal set are not QCLed.

In one embodiment, any two second-type reference signals in thesecond-type reference signal set are not QCLed, let alone correspondingto QCL-TypeD.

In one embodiment, the third occasion subset comprises all or part oftransmission occasions in the second transmission occasion set.

In one embodiment, any transmission occasion comprised by the thirdoccasion subset belongs to the second transmission occasion set.

In one embodiment, the second-type reference signal subset is composedof all second-type reference signals that fulfill the second conditionin the second-type reference signal set.

In one embodiment, the second-type reference signal subset onlycomprises the first reference signal.

In one embodiment, the second-type reference signal subset comprises atleast one second-type reference signal in the second-type referencesignal set other than the first reference signal.

In one embodiment, the third occasion subset is empty.

In one embodiment, a number of transmission occasion(s) comprised by thethird occasion subset is greater than 0.

In one embodiment, all transmission occasions in the second transmissionoccasion set belong to a second time interval in time domain.

In one embodiment, each transmission occasion in the third occasionsubset belongs to a second time interval in time domain.

In one embodiment, the second time interval is a contiguous duration.

In one embodiment, a length of the second time interval isT_(Evaluate_CBD_SSB) ms or T_(Evaluate_CBD_CSI-RS) ms.

In one embodiment, specific definitions of the T_(Evaluate_CBD_SSB) orT_(Evaluate_CBD_CSI-RS) can be found in 3GPP TS38.133.

In one embodiment, the third threshold is a positive integer greaterthan 1.

In one embodiment, the third threshold is fixed.

In one embodiment, the third threshold is in no need of configuration.

In one embodiment, the third threshold is configured by a higher layersignaling.

In one embodiment, the fourth threshold is a real number.

In one embodiment, the fourth threshold is a non-negative real number.

In one embodiment, the fourth threshold is a non-negative real number nogreater than 1.

In one embodiment, the fourth threshold is Q_(in_LR).

In one embodiment, the specific definition of Q_(in_LR) can be found in3GPP TS38.133.

In one embodiment, the fourth threshold is configured by a higher layerparameter rsrp-ThresholdSSB.

In one embodiment, the second received quality is a RSRP.

In one embodiment, the second received quality is a L1-RSRP.

In one embodiment, the second received quality is a SINR.

In one embodiment, the second received quality is a L1-SINR.

In one embodiment, the second received quality is a RSRQ.

In one embodiment, the second received quality is a SNR.

In one embodiment, a RSRP of the given second-type reference signalreceived in the third occasion subset is used to determine the secondreceived quality.

In one embodiment, the second received quality is equal to a RSRP of thegiven second-type reference signal received in the third occasionsubset.

In one embodiment, a SINR of the given second-type reference signalreceived in the third occasion subset is used to determine the secondreceived quality.

In one embodiment, the second received quality is equal to a SINR of thegiven second-type reference signal received in the third occasionsubset.

In one embodiment, the second received quality is obtained by either theRSRP or SINR of the given second-type reference signal received in thethird occasion subset based on the look-up table method.

In one embodiment, the above-mentioned method in a first node used forwireless communications comprises at least one of:

upon reception of a request sent from a higher layer of the first node,a physical layer of the first node reports a second information block tothe higher layer, wherein the second information block comprises a firstindex and the second received quality; the first index is used foridentifying the first reference signal.

In one embodiment, the second information block comprises the number oftransmission occasion(s) in the third occasion subset.

In one embodiment, a total number of second-type reference signalscomprised by the second-type reference signal subset is greater than 1,and the second information block comprises S1 indexes and S1 receivedqualities, with the second received quality included; the S1 indexes arerespectively used for identifying S1 second-type reference signals inthe second-type reference signal subset, the first reference signal isone of the S1 second-type reference signals; and the S1 receivedqualities are received qualities of the S1 second-type referencesignals, respectively.

In one subembodiment, the second information block comprises a number oftimes of each of the S1 second-type reference signals being received inthe second time interval.

In one subembodiment, the higher layer of the first node autonomouslydetermines the first reference signal from the S1 second-type referencesignals and notifies the physical layer of the first node of the firstreference signal via the second indication information.

In one embodiment, the above-mentioned method in a first node used forwireless communications comprises at least one of:

receiving the given second-type reference signal in the third occasionsubset; or

dropping reception of the given second-type reference signal in atransmission occasion in the second transmission occasion set other thanthe third occasion subset.

In one embodiment, the above-mentioned method in a second node used forwireless communications comprises at least one of:

transmitting the given second-type reference signal in the thirdoccasion subset; or

dropping transmission of the given second-type reference signal in atransmission occasion in the second transmission occasion set other thanthe third occasion subset.

Embodiment 13

Embodiment 13 illustrates a schematic diagram of a first nodedetermining whether to receive a given reference signal in a giventransmission occasion according to one embodiment of the presentdisclosure; as shown in FIG. 13. In Embodiment 13, the giventransmission occasion and the given reference signal are respectivelythe first given transmission occasion and the given first-type referencesignal; or, the given transmission occasion and the given referencesignal are respectively the second given transmission occasion and thegiven second-type reference signal.

In one embodiment, the given transmission occasion is the first giventransmission occasion, and the given reference signal is the givenfirst-type reference signal.

In one embodiment, the given transmission occasion is the second giventransmission occasion, and the given reference signal is the givensecond-type reference signal.

In one embodiment, the first given transmission occasion is anytransmission occasion in the first transmission occasion set.

In one embodiment, the second given transmission occasion is anytransmission occasion in the second transmission occasion set.

In one embodiment, the second given transmission occasion is earlierthan the first given transmission occasion in time domain.

In one embodiment, the second given transmission occasion is later thanthe first given transmission occasion in time domain.

In one embodiment, the second given transmission occasion is overlappingwith the first given transmission occasion in time domain.

In one embodiment, the above method in the first node used for wirelesscommunications includes:

performing blind detection on the given reference signal in the giventransmission occasion;

herein, a result of the blind detection is used to determine whether toreceive the given reference signal in the given transmission occasion.

In one embodiment, the blind detection refers to reception based oncoherent detection, namely, performing coherent reception and measuringenergy of a signal obtained by the coherent reception; if the energy ofthe signal obtained by the coherent reception is greater than a thirdgiven threshold, it is then determined that the given reference signalis received in the given transmission occasion; otherwise, it isdetermined that the reception of the given reference signal is droppedin the given transmission occasion.

In one embodiment, the blind detection refers to reception based onenergy detection, namely, sensing energy of radio signals and averagingto acquire a received energy; if the received energy is greater than afourth given threshold, it is then determined that the given referencesignal is received in the given transmission occasion; otherwise, it isdetermined that the reception of the given reference signal is droppedin the given transmission occasion.

In one embodiment, the blind detection means that the first node is notcertain about whether to receive the given reference signal in the giventransmission occasion before performing the coherent detection.

In one embodiment, the blind detection means that the first node is notcertain about whether to receive the given reference signal in the giventransmission occasion before performing the energy detection.

In one embodiment, if one condition subset of P condition subset(s) isfulfilled, the first node receives the given reference signal in thegiven transmission occasion; if none of the P condition subset(s) isfulfilled, the first node drops receiving the given reference signal inthe given transmission occasion.

In one subembodiment, a condition subset of the P condition subset(s)comprises that the given transmission occasion belongs to the first-typetime window in time domain.

In one subembodiment, a condition subset of the P condition subset(s)comprises that the given transmission occasion belongs to the first-typetime window in time domain, and that the given reference signal is QCLedwith a reference signal comprised in a reference signal groupcorresponding to a first-type time window to which the giventransmission occasion belongs.

In one subembodiment, a condition subset of the P condition subset(s)comprises that the first node detects a dynamic signaling indicatingthat one or more multicarrier symbols occupied by the given transmissionoccasion will be used for a transmission from a transmitter of the givenreference signal to the first node.

In one subembodiment, P is a positive integer greater than 1.

In one subembodiment, P is equal to 1.

In one embodiment, the above method in the second node used for wirelesscommunications includes:

performing a second access detection; herein, a result of the secondaccess detection is used to determine whether to transmit the givenreference signal in the given transmission occasion.

In one embodiment, the second access detection is LBT.

In one embodiment, the second access detection is Category 4 LBT.

In one embodiment, the second access detection is Category 2 LBT.

In one embodiment, the second access detection is CCA.

In one embodiment, the second access detection is implemented in a waydefined by 3GPP TS37.213, section 4.

In one embodiment, the second access detection is a DL Channel accessprocedure.

In one embodiment, the specific way of implementation of DL Channelaccess procedure can be found in 3GPP TS37.213, section 4.1.

In one embodiment, the second access detection is a Type 1 DL Channelaccess procedure.

In one embodiment, the second access detection is a Type 2 DL Channelaccess procedure.

In one embodiment, the second access detection is performed on asub-band to which the given reference signal belongs.

In one embodiment, the second access detection is performed on a servingcell to which the given reference signal belongs.

In one embodiment, the second access detection is used by the secondnode for determining whether a sub-band to which the given referencesignal belongs is idle.

In one embodiment, the second access detection is used by the secondnode for determining whether a sub-band to which the given referencesignal belongs is idle in the given transmission occasion.

In one embodiment, if the result of the second access detectionindicates that a sub-band to which the given reference signal is idle,the second node transmits the given reference signal in the giventransmission occasion; otherwise, the second node drops transmitting thegiven reference signal in the given transmission occasion.

Embodiment 14

Embodiment 14 illustrates a structure block diagram of a processingdevice in a first node according to one embodiment of the presentdisclosure; as shown in FIG. 14. In FIG. 14, a processing device 1400 ina first node comprises a first transmitter 1401 and a first processor1402.

In Embodiment 14, the first transmitter 1401 transmits a first signal;and the first processor 1402 monitors a first-type signaling in a firstresource block in a first time window in a first sub-band.

In Embodiment 14, the first signal is used to determine a firstreference signal; for the monitoring on the first-type signaling in thefirst resource block in the first time window, the first node assumessame QCL parameters as a target reference signal; the target referencesignal is either the first reference signal or a second referencesignal; whether the first time window belongs to a first-type timewindow is used to determine the target reference signal between thefirst reference signal and the second reference signal; any saidfirst-type time window corresponds to a reference signal group, a targettime window is the first-type time window, and the target time windowcorresponds to a target reference signal group; when the first timewindow belongs to the target time window, whether the first referencesignal and one reference signal from the target reference signal groupare QCLed is used to determine the target reference signal between thefirst reference signal and the second reference signal.

In one embodiment, the first processor 1402 receives a first signaling;herein, the first time window belongs to the target time window; thefirst signaling is used to determine the target time window and thetarget reference signal group.

In one embodiment, the first processor 1402 performs a first accessdetection; and the first transmitter 1401 transmits a second signalafter completion of the first access detection; herein, the first timewindow belongs to the target time window; the second signal is used todetermine the target time window and the target reference signal group.

In one embodiment, the first processor 1402 determines whether a firstcondition is fulfilled for each first-type reference signal in afirst-type reference signal set; herein, whether each first-typereference signal comprised in the first-type reference signal setfulfills the first condition is used to determine whether the firstsignal is transmitted; the first node determines that each first-typereference signal comprised in the first-type reference signal setfulfills the first condition, and determines to transmit the firstsignal; the given first-type reference signal is any first-typereference signal comprised in the first-type reference signal set, and afirst transmission occasion set is reserved for the given first-typereference signal; when the given first-type reference signal fulfillsone of a first condition subset and a second condition subset, the givenfirst-type reference signal fulfills the first condition;

the first condition subset comprises: a number of transmission occasionscomprised by a first occasion subset is greater than a first threshold;the first node drops receiving the given first-type reference signal inthe first occasion subset, the first occasion subset being a subset ofthe first transmission occasion set;

the second condition subset comprises: a first received quality is lowerthan a second threshold; a measurement on the given first-type referencesignal in a second occasion subset is used to determine the firstreceived quality, and the first node receives the given first-typereference signal in the second occasion subset, the second occasionsubset being a subset of the first transmission occasion set.

In one embodiment, the first processor 1402 determines whether toreceive the given first-type reference signal in a first giventransmission occasion; herein, the first given transmission occasion isone transmission occasion in the first transmission occasion set.

In one embodiment, the first processor 1402 whether a second conditionis fulfilled for each second-type reference signal comprised in asecond-type reference signal set; herein, a second-type reference signalsubset is composed of second-type reference signals comprised in thesecond-type reference signal set that fulfill the second condition, andthe first reference signal is a second-type reference signal in thesecond-type reference signal subset; a given second-type referencesignal is any second-type reference signal comprised in the second-typereference signal set, and a second transmission occasion set is reservedfor the given second-type reference signal; when the given second-typereference signal fulfills both a third condition subset and a fourthcondition subset, the given second-type reference signal fulfills thesecond condition.

the third condition subset comprises: a number of transmission occasionscomprised by a third occasion subset is greater than a third threshold;the first node receives the given second-type reference signal in thethird occasion subset, the third occasion subset being a subset of thesecond transmission occasion set;

the fourth condition subset comprises: a second channel quality isgreater than or equal to a fourth threshold; a measurement on the givensecond-type reference signal in the third occasion subset is used todetermine the second channel quality.

In one embodiment, the first processor 1402 determines whether toreceive the given second-type reference signal in a second giventransmission occasion; herein, the second given transmission occasion isone transmission occasion in the second transmission occasion set.

In one embodiment, the first node is a UE.

In one embodiment, the first node is a relay node.

In one embodiment, the first transmitter 1401 comprises at least one ofthe antenna 452, the transmitter 454, the transmitting processor 468,the multi-antenna transmitting processor 457, the controller/processor459, the memory 460 or the data source 467 in Embodiment 4.

In one embodiment, the first processor 1402 comprises at least one ofthe antenna 420, the receiver 454, the receiving processor 456, themulti-antenna receiving processor 458, the controller/processor 459, thememory 460 or the data source 467 in Embodiment 4.

Embodiment 15

Embodiment 15 illustrates a structure block diagram of a processingdevice in a second node according to one embodiment of the presentdisclosure; as shown in FIG. 15. In FIG. 15, a processing device 1500 ina second node comprises a first processor and a second processor 1502.

In Embodiment 15, the first receiver 1501 receives a first signal; thesecond processor 1502 transmits a first-type signaling in a firstresource block in a first time window in a first sub-band, or dropstransmitting the first-type signaling in the first resource block in thefirst time window in the first sub-band.

In Embodiment 15, the first signal is used to determine a firstreference signal; a transmitter of the first signal assumes a QCLparameter identical to a target reference signal for monitoring thefirst-type signaling in the first resource block in the first timewindow in the first sub-band; the target reference signal is either thefirst reference signal or a second reference signal; whether the firsttime window belongs to a first-type time window is used to determine thetarget reference signal between the first reference signal and thesecond reference signal; any said first-type time window corresponds toa reference signal group, a target time window is the first-type timewindow, and the target time window corresponds to a target referencesignal group; when the first time window belongs to the target timewindow, whether the first reference signal and one reference signal fromthe target reference signal group are QCLed is used to determine thetarget reference signal between the first reference signal and thesecond reference signal.

In Embodiment 15, the second processor 1502 transmits a first signaling;herein, the first time window belongs to the target time window; thefirst signaling is used to determine the target time window and thetarget reference signal group.

In one embodiment, the first receiver 1501 receives a second signal;herein, the first time window belongs to the target time window; thesecond signal is used to determine the target time window and the targetreference signal group.

In one embodiment, the second processor 1502 determines whether totransmit a given first-type reference signal in a first giventransmission occasion; herein, the given first-type reference signal isany first-type reference signal comprised in a first-type referencesignal set, and the first-type reference signal set is used to determinewhether the first signal is transmitted; a first transmission occasionset is reserved for the given first-type reference signal, and the firstgiven transmission occasion is one transmission occasion in the firsttransmission occasion set.

In one embodiment, the second processor 1502 determines whether totransmit a given second-type reference signal in a second giventransmission occasion; herein, the given second-type reference signal isany second-type reference signal comprised in a second-type referencesignal set, and the first reference signal is a second-type referencesignal in the second-type reference signal set; a second transmissionoccasion set is reserved for the given second-type reference signal, andthe second given transmission occasion is one transmission occasion inthe second transmission occasion set.

In one embodiment, the second node is a base station.

In one embodiment, the second node is a UE.

In one embodiment, the second node is a relay node.

In one embodiment, the first receiver 1501 comprises at least one of theantenna 420, the receiver 418, the receiving processor 470, themulti-antenna receiving processor 472, the controller/processor 475 orthe memory 476 in Embodiment 4.

In one embodiment, the second processor 1502 comprises at least one ofthe antenna 420, the transmitter 418, the transmitting processor 416,the multi-antenna transmitting processor 471, the controller/processor475 or the memory 476 in Embodiment 4.

Embodiment 16

Embodiment 16 illustrates a flowchart of a first-type signaling, a firstsignaling, a second-type signaling and a third-type signaling accordingto one embodiment of the present disclosure, as shown in FIG. 16. In1600 illustrated by FIG. 16, each box represents a step. Particularly,the sequential order of steps arranged in the boxes does not imply anyspecific chronological order of these steps.

In Embodiment 16, the first node in the present disclosure monitors afirst-type signaling in a first resource block set in a first timewindow in a first sub-band in step 1601; and receives a first signalingin a first resource block in step 1602; monitors a second-type signalingin a second resource block set in a second time window in the firstsub-band in step 1603; and monitors a third-type signaling in a targetresource block set in a third time window in a second sub-band in step1604. Herein, the first signaling is used by the first node fordetermining to monitor the second-type signaling in the second resourceblock set in the second time window in the first sub-band; the firstsignaling is used to determine a first index and a third index, thefirst index being a first-type index, and the third index being athird-type index; any one of the first resource block set, the secondresource block set and the target resource block set corresponds to asaid first-type index and a second-type index; the first-type indexcorresponding to the first resource block set and the first-type indexcorresponding to the second resource block set are both equal to thefirst index, while the second-type index corresponding to the firstresource block set is unequal to the second-type index corresponding tothe second resource block set; the first-type index corresponding to thetarget resource block set is equal to a second index; the first sub-bandand the second sub-band respectively belong to a first serving cell anda second serving cell, and the first serving cell and the second servingcell respectively correspond to two said third-type indexes; thethird-type index corresponding to the first serving cell is equal to thethird index, and the third-type index corresponding to the secondserving cell is equal to a fourth index; the first index, the secondindex, the third index and the fourth index are jointly used todetermine whether the second-type index corresponding to the targetresource block set aligns with the second-type index corresponding tothe second resource block set; the first signaling is used to determinea start of the second time window, a start of the third time windowbeing the same as the start of the second time window.

In one embodiment, the first node monitors the second-type signaling inthe second resource block set in the first sub-band in the second timewindow.

In one embodiment, the first node stops monitoring the first-typesignaling in the first resource block set in the first sub-band in thesecond time window.

In one embodiment, the first node stops monitoring the first-typesignaling in the first resource block set when starting to monitor thesecond-type signaling in the second resource block set.

In one embodiment, the first node stops monitoring the first-typesignaling in the first resource block set in the first place and thenstarts to monitor the second-type signaling in the second resource blockset.

In one embodiment, the target resource block set is one of 2 candidateresource block sets; the second-type indexes corresponding to the 2candidate resource block sets are of unequal values, and the first-typeindexes corresponding to the 2 candidate resource block sets are equalto the second index, both of the 2 candidate resource block setsbelonging to the second sub-band in frequency domain.

In one embodiment, the phrase of whether the second-type indexcorresponding to the target resource block set aligns with thesecond-type index corresponding to the second resource block set meanswhether it is dependent on the second-type index corresponding to thesecond resource block set when it comes to which one of the 2 candidateresource block sets is the target resource block set.

In one embodiment, the phrase of whether the second-type indexcorresponding to the target resource block set aligns with thesecond-type index corresponding to the second resource block set meanswhether the second-type index corresponding to the target resource blockset is inevitably equal to the second-type index corresponding to thesecond resource block set.

In one embodiment, the phrase of whether the second-type indexcorresponding to the target resource block set aligns with thesecond-type index corresponding to the second resource block set meanswhether the target resource block set is inevitably one of the 2candidate resource block sets whose corresponding second-type index isequal to the second-type index corresponding to the second resourceblock set.

In one embodiment, the phrase of whether the second-type indexcorresponding to the target resource block set aligns with thesecond-type index corresponding to the second resource block set meanswhether the first node, during its switch to the second resource blockset in the first subcarrier, shall be synchronously switched to aresource block set in the second subcarrier whose correspondingsecond-type index is equal to the second-type index corresponding to thesecond resource block set.

In one embodiment, the phrase of whether the second-type indexcorresponding to the target resource block set aligns with thesecond-type index corresponding to the second resource block set meanswhether the first signaling is used to determine a switch to the targetresource block set in the third time window in the second subcarrier.

In one embodiment, the phrase of whether the second-type indexcorresponding to the target resource block set aligns with thesecond-type index corresponding to the second resource block set meanswhether the first bit string is used to determine a switch to the targetresource block set in the third time window in the second subcarrier.

In one embodiment, when the second-type index corresponding to thetarget resource block set is aligned with the second-type indexcorresponding to the second resource block set, the second-type indexcorresponding to the target resource block set is equal to thesecond-type index corresponding to the second resource block set all thetime.

In one embodiment, when the second-type index corresponding to thetarget resource block set is aligned with the second-type indexcorresponding to the second resource block set, the target resourceblock set remains one of the 2 candidate resource block sets whosecorresponding second-type index is equal to the second-type indexcorresponding to the second resource block set.

In one embodiment, when the second-type index corresponding to thetarget resource block set is aligned with the second-type indexcorresponding to the second resource block set, the first node issynchronously switched to a resource block set with the correspondingsecond-type index being equal to the second-type index corresponding tothe second resource block set in the second subcarrier during its switchto the second resource block in the first subcarrier.

In one embodiment, when the second-type index corresponding to thetarget resource block set is not aligned with the second-type indexcorresponding to the second resource block set, the second-type indexcorresponding to the target resource block set is unrelated to thesecond-type index corresponding to the second resource block set.

In one embodiment, when the second-type index corresponding to thetarget resource block set is not aligned with the second-type indexcorresponding to the second resource block set, which one of the 2candidate resource block sets is the target resource block set isunrelated to a value of the second-type index corresponding to thesecond resource block set.

In one embodiment, when the second-type index corresponding to thetarget resource block set is aligned with the second-type indexcorresponding to the second resource block set, the third time windowlasts as long as the second time window.

In one embodiment, the monitoring refers to blind decoding, namely,receiving a signal and performing decoding operation; if the decoding isdetermined as correct according to a Cyclic Redundancy Check (CRC) bit,it is determined that a given signaling is detected; otherwise, it isdetermined that the given signaling is not detected.

In one embodiment, the monitoring refers to reception based on coherentdetection, namely, performing coherent reception and measuring energy ofa signal obtained by the coherent reception; if the energy of the signalobtained by the coherent reception is greater than a first giventhreshold, it is determined that a given signaling is detected;otherwise, it is determined that the given signaling is not detected.

In one embodiment, the monitoring refers to reception based on energydetection, namely, sensing energy of radio signals and averaging toacquire a received energy; if the received energy is greater than asecond given threshold, it is determined that a given signaling isdetected; otherwise, it is determined that the given signaling is notdetected.

In one embodiment, the phrase of monitoring a given signaling means thatthe first node determines whether the given signaling is to betransmitted according to CRC.

In one embodiment, the phrase of monitoring a given signaling means thatthe first node is uncertain about whether the given signaling is to betransmitted before determining whether the decoding is correct accordingto CRC.

In one embodiment, the phrase of monitoring a given signaling means thatthe first node determines whether the given signaling is to betransmitted according to the coherent detection.

In one embodiment, the phrase of monitoring a given signaling means thatthe first node is uncertain about whether the given signaling is to betransmitted before the coherent detection.

In one embodiment, the phrase of monitoring a given signaling means thatthe first node determines whether the given signaling is to betransmitted according to the energy detection.

In one embodiment, the phrase of monitoring a given signaling means thatthe first node is uncertain about whether the given signaling is to betransmitted before the energy detection.

In one embodiment, the given signaling is any one of the first-typesignaling, the second-type signaling or the third-type signaling.

In one embodiment, the given signaling is the first-type signaling.

In one embodiment, the given signaling is the second-type signaling.

In one embodiment, the given signaling is the third-type signaling.

In one embodiment, the given signaling comprises a physical layersignaling.

In one embodiment, the given signaling comprises a dynamic signaling.

In one embodiment, the given signaling comprises a L1 signaling.

In one embodiment, the given signaling comprises a L1 control signaling.

In one embodiment, the given signaling comprises a higher layersignaling.

In one embodiment, the given signaling comprises Downlink controlinformation (DCI).

In one embodiment, the given signaling comprises one or more fields of apiece of DCI.

In one embodiment, the given signaling comprises one or more fields of apiece of Sidelink Control Information (SCI).

In one embodiment, the given signaling format includes one or moreformats in a first format set.

In one embodiment, the first format set comprises DCI Format 0_0, DCIFormat 0_1, DCI Format 0_2, DCI Format 1_0, DCI Format 1_1, DCI Format1_2, DCI Format 2_0, DCI Format 2_1, DCI Format 2_2, DCI Format 2_3, DCIFormat 2_4, DCI Format 2_5 and DCI Format 2_6.

In one embodiment, there is a common format shared by a format includedby the first-type signaling and a format included by the second-typesignaling.

In one embodiment, there is a common format shared by a format includedby the first-type signaling and a format included by the third-typesignaling.

In one embodiment, there is a common format shared by a format includedby the second-type signaling and a format included by the third-typesignaling.

In one embodiment, there is a format not belonging to the formatincluded by the first-type signaling and the format included by thesecond-type signaling simultaneously.

In one embodiment, there is a format not belonging to the formatincluded by the first-type signaling and the format included by thethird-type signaling simultaneously.

In one embodiment, there is a format not belonging to the formatincluded by the second-type signaling and the format included by thethird-type signaling simultaneously.

In one embodiment, the first signaling comprises a physical layersignaling.

In one embodiment, the first signaling comprises a dynamic signaling.

In one embodiment, the first signaling comprises a L 1 signaling.

In one embodiment, the first signaling comprises a higher layersignaling.

In one embodiment, the first signaling comprises DCI.

In one embodiment, the first signaling comprises one or more fields of apiece of DCI.

In one embodiment, the first signaling comprises one or more fields of apiece of SCI.

In one embodiment, the first signaling is the first-type signaling.

In one embodiment, the first signaling is not the first-type signaling.

In one embodiment, the format of the first signaling is DCI Format 2_0.

In one embodiment, the format of the first signaling is a format in thefirst format set.

In one embodiment, a time-domain resource occupied by the firstsignaling belongs to the first time window.

In one embodiment, a time-domain resource occupied by the firstsignaling does not belong to the first time window.

In one embodiment, an end of the first time window is an end time of thefirst signaling.

In one embodiment, an end of the first time window is an end time of atime unit occupied by the first signaling.

In one embodiment, an end of the first time window is after a positiveinteger number of multicarrier symbol(s) subsequent to an end time ofthe first signaling.

In one embodiment, an end time of a time-domain resource occupied by thefirst signaling is no later than a start of the second time window.

In one embodiment, a first symbol is a last multicarrier symbol occupiedby the first signaling, and a start of the second time window is a starttime of a first time unit; the first time unit is an earliest time unitafter at least P1 symbols following the first symbol, P1 being apositive integer greater than 1.

In one subembodiment, a time interval between a start time of the firsttime unit and an end time of the first symbol is no smaller than P1symbols.

In one embodiment, a first reference subcarrier spacing is used todetermine a length of the first symbol.

In one embodiment, a second reference subcarrier spacing is used todetermine a length of the first symbol.

In one embodiment, the first symbol is a multicarrier symbol for thefirst reference subcarrier spacing.

In one embodiment, the first symbol is a multicarrier symbol for thesecond reference subcarrier spacing.

In one embodiment, a length of any symbol of the P1 symbols isdetermined based on a first reference subcarrier spacing.

In one embodiment, a length of any symbol of the P1 symbols isdetermined based on a second reference subcarrier spacing.

In one embodiment, any one of the P1 symbols is a multicarrier symbolfor a first reference subcarrier spacing.

In one embodiment, any one of the P1 symbols is a multicarrier symbolfor a second reference subcarrier spacing.

In one embodiment, the second reference subcarrier spacing is differentfrom the first reference subcarrier spacing.

In one embodiment, the P1's value is dependent on the first referencesubcarrier spacing.

In one embodiment, the P1's value is dependent on the first node'scapability.

In one embodiment, for any given said first reference subcarrier spacingand the first node's capability, the P1's value is fixed.

In one embodiment, the first reference subcarrier spacing is a smallestone of W1 subcarrier spacings, W1 being a positive integer greater than1; the W1 subcarrier spacings are respectively subcarrier spacingscorresponding to active BWPs of W1 serving cells, and the W1 servingcells are added by the first node; the first serving cell is one of theW1 serving cells.

In one embodiment, the first serving cell is one of W1 serving cells, W1being a positive integer greater than 1, and the W1 serving cells areadded by the first node; the first reference subcarrier spacing is asmallest one of subcarrier spacings corresponding to all BWPs configuredin the W1 serving cells.

In one embodiment, the second serving cell is one of the W1 servingcells.

In one embodiment, the second serving cell does not belong to the W1serving cells.

In one embodiment, the third-type indexes corresponding to the W1serving cells are of an equal value.

In one embodiment, for any given serving cell of the W1 serving cells,the first node is configured to monitor a PDCCH in a reference resourceblock set in an active BWP corresponding to the given serving cell, andthe first-type index corresponding to the reference resource block setis equal to the first index.

In one embodiment, for any given serving cell of the W1 serving cells,the first node is configured to monitor a PDCCH in a reference resourceblock set in an active BWP corresponding to the given serving cell, anda pair of the third-type index—the first-type index corresponding to thereference resource block set that corresponds to the given serving cellbelongs to the first index pair set.

In one embodiment, the first signaling belongs to one of the W1 servingcells in frequency domain.

In one embodiment, the second reference subcarrier spacing is pre-set.

In one embodiment, the second reference subcarrier spacing is asubcarrier spacing of a BWP that the first signaling belongs to.

In one embodiment, the second reference subcarrier spacing is a largestone of the W1 subcarrier spacings.

In one embodiment, the time unit is a slot.

In one embodiment, the time unit is a first-type reference slot.

In one embodiment, a length of the first-type reference slot isdetermined on the basis of the first reference subcarrier spacing.

In one embodiment, the first-type reference slot is a slot correspondingto the first reference subcarrier spacing.

In one embodiment, a length of the first-type reference slot isdetermined on the basis of the second reference subcarrier spacing.

In one embodiment, the first-type reference slot is a slot correspondingto the second reference subcarrier spacing.

In one embodiment, a said time unit comprises a positive integer numberof multicarrier symbol(s).

In one embodiment, a said time unit comprises a positive integer numberof first-type reference multicarrier symbol(s).

In one embodiment, a length of the first-type reference multicarriersymbol is determined on the basis of the first reference subcarrierspacing.

In one embodiment, the first-type reference multicarrier symbol is amulticarrier symbol corresponding to the first reference subcarrierspacing.

In one embodiment, a length of the first-type reference multicarriersymbol is determined on the basis of the second reference subcarrierspacing.

In one embodiment, the first-type reference multicarrier symbol is amulticarrier symbol corresponding to the second reference subcarrierspacing.

In one embodiment, the multicarrier symbol is an Orthogonal FrequencyDivision Multiplexing (OFDM) symbol.

In one embodiment, the multicarrier symbol is a Single Carrier-FrequencyDivision Multiple Access (SC-FDMA) symbol.

In one embodiment, the multicarrier symbol is a Discrete FourierTransform Spread OFDM (DFT-S-OFDM).

In one embodiment, the first signaling indicates a start of monitoringthe second-type signaling in the second resource block set in the secondtime window.

In one embodiment, the first signaling indicates a stop of monitoringthe first-type signaling in the first resource block set in the secondtime window.

In one embodiment, the first signaling indicates a switch from the firstresource block set to the second resource block set.

In one embodiment, the first signaling comprises a first bit string, andthe first bit string in the first signaling indicates a start ofmonitoring the second-type signaling in the second resource block set inthe second time window.

In one subembodiment, the first bit string in the first signalingindicates a stop of monitoring the first-type signaling in the firstresource block set in the second time window.

In one embodiment, the first signaling comprises a first bit string, andthe first bit string in the first signaling indicates a switch from thefirst resource block set to the second resource block set.

In one embodiment, the first signaling comprises a first bit string, andthe first bit string in the first signaling indicates a first value, andthe second-type index corresponding to the second resource block set isequal to the first value.

In one embodiment, if the first node is configured with a firstparameter, the first signaling comprises the first bit string; the firstparameter is a higher layer parameter.

In one embodiment, the first parameter comprises all or part ofinformation contained in a higher layer parameterSearchSpaceSwitchTrigger-r16.

In one embodiment, the first signaling comprises a first field, and thefirst field comprised by the first signaling comprises M1 bit strings,M1 being a positive integer greater than 1; the first bit string is oneof the M1 bit strings.

In one embodiment, any one of the M1 bit strings corresponds to a saidthird-type index.

In one embodiment, any one of the M1 bit strings corresponds to a pairof the third-type index—the first-type index.

In one embodiment, the first bit string corresponds to the third index.

In one embodiment, the first bit string corresponds to the thirdindex—the first index pair.

In one embodiment, a position of the first bit string among the M1 bitstrings is configured by a higher layer signaling.

In one embodiment, a name of the higher-layer signaling for configuringthe position of the first bit string among the M1 bit strings includesSlotFormat.

In one embodiment, the first bit string only comprises one bit.

In one embodiment, the first bit string comprises more than one bit.

In one embodiment, the first signaling implicitly indicates a switchfrom the first resource block set to the second resource block set.

In one embodiment, the fact of the first signaling being detected isused for indicating a switch from the first resource block set to thesecond resource block set.

In one embodiment, if the second-type index corresponding to the firstresource block set is equal to 0 and the first resource block belongs tothe first resource block set, once detecting the first signaling, thefirst node starts to monitor the second-type signaling in the secondresource block set in the second time window.

In one embodiment, if the second-type index corresponding to the firstresource block set is equal to 0 and the first resource block belongs tothe first resource block set, once detecting the first signaling, thefirst node stops monitoring the first-type signaling in the firstresource block set in the second time window.

In one embodiment, the first signaling is a said first-type signalingthat is first detected by the first node in the first resource block setin the first time window.

In one embodiment, the first signaling comprises a bit field, and thebit field indicates the first index.

In one embodiment, the first signaling comprises a bit field, and thebit field indicates the third index.

In one embodiment, a position of the first bit string among the M1 bitstrings is used to determine the third index.

In one embodiment, a position of the first bit string among the M1 bitstrings is used to determine the third index—the first index pair.

In one embodiment, a time-frequency resource occupied by the firstsignaling is used to determine the first index.

In one embodiment, a time-frequency resource occupied by the firstsignaling is used to determine the third index.

In one embodiment, the first resource block belongs to the firstresource block set, and the first index is equal to the first-type indexcorresponding to the first resource block set.

In one embodiment, whether a CORESET associated with the first resourceblock is configured with a CORESETPoolIndex along with, if configured, avalue of the CORESETPoolIndex is used to determine the first index.

In one embodiment, if the CORESET associated with the first resourceblock is not configured with a CORESETPoolIndex, the first index isequal to 0.

In one embodiment, if the CORESET associated with the first resourceblock is configured with a CORESETPoolIndex equal to 0, the first indexis equal to 0.

In one embodiment, if the CORESET associated with the first resourceblock is configured with a CORESETPoolIndex equal to 1, the first indexis equal to 1.

In one embodiment, the third index is the third-type index correspondingto a serving cell to which the first signaling belongs.

Embodiment 17

Embodiment 17 illustrates a flowchart of wireless transmission accordingto one embodiment of the present disclosure, as shown in FIG. 17. InFIG. 17, a second node U3 and a first node U4 are communication nodes intransmission via an air interface. As illustrated by FIG. 17, stepsmarked by boxes from F171 to F178 are optional, respectively.

The second node U3 transmits a first information block in step S17301;transmits a first-type signaling in a first resource block set in afirst time window in a first sub-band in step S17302; and performs afirst access detection in step S17303; transmits a first signaling instep S1731; transmits a second-type signaling in a second resource blockset in a second time window in the first sub-band in step S17304; andtransmits a third-type signaling in a target resource block set in athird time window in a second sub-band in step S17305.

The first node U4 receives a first information block in step S17401;monitors a first-type signaling in a first resource block set in a firsttime window in a first sub-band in step S1741; and receives a firstsignaling in a first resource block in step S1742; configures a firstcounter's value as a first time length after detecting the firstsignaling in step S17402; monitors a second-type signaling in a secondresource block set in a second time window in the first sub-band in stepS1743; and stops monitoring the first-type signaling in the firstresource block set in the second time window in the first sub-band instep S17403; monitors a third-type signaling in a target resource blockset in a third time window in a second sub-band in step S1744; anddecrements the first counter by 1 for each passed second-type referenceslot in step S17404.

In Embodiment 17, the first signaling is used by the first node U4 fordetermining to monitor the second-type signaling in the second resourceblock set in the second time window in the first sub-band; the firstsignaling is used by the first node U4 to determine a first index and athird index, the first index being a first-type index, and the thirdindex being a third-type index; any one of the first resource block set,the second resource block set and the target resource block setcorresponds to a said first-type index and a second-type index; thefirst-type index corresponding to the first resource block set and thefirst-type index corresponding to the second resource block set are bothequal to the first index, while the second-type index corresponding tothe first resource block set is unequal to the second-type indexcorresponding to the second resource block set; the first-type indexcorresponding to the target resource block set is equal to a secondindex; the first sub-band and the second sub-band respectively belong toa first serving cell and a second serving cell, and the first servingcell and the second serving cell respectively correspond to two saidthird-type indexes; the third-type index corresponding to the firstserving cell is equal to the third index, and the third-type indexcorresponding to the second serving cell is equal to a fourth index; thefirst index, the second index, the third index and the fourth index arejointly used by the first node U4 to determine whether the second-typeindex corresponding to the target resource block set aligns with thesecond-type index corresponding to the second resource block set; thefirst signaling is used by the first node U4 to determine a start of thesecond time window, a start of the third time window being the same asthe start of the second time window.

In one embodiment, the first node U4 is the first node in the presentdisclosure.

In one embodiment, the second node U3 is the second node in the presentdisclosure.

In one embodiment, an air interface between the second node U3 and thefirst node U4 includes a radio interface between a base station and aUE.

In one embodiment, an air interface between the second node U3 and thefirst node U4 includes a radio interface between UEs.

In one embodiment, the second node U3 is a maintenance base station fora serving cell of the first node U4.

In one embodiment, the first resource block belongs to the firstresource block set, and the first signaling is a said first-typesignaling; the second node transmits the first-type signaling other thanthe first signaling in the first resource block set in the first timewindow in the first sub-band, or, the second node drops transmitting thefirst-type signaling other than the first signaling in the firstresource block set in the first time window in the first sub-band.

In one embodiment, the first-type signaling is transmitted on a PDCCH.

In one embodiment, the first-type signaling is transmitted on a PhysicalSidelink Control Channel (PSCCH).

In one embodiment, the second-type signaling is transmitted on a PDCCH.

In one embodiment, the second-type signaling is transmitted on a PSCCH.

In one embodiment, the third-type signaling is transmitted on a PDCCH.

In one embodiment, the third-type signaling is transmitted on a PSCCH.

In one embodiment, the first signaling is transmitted on a PDCCH.

In one embodiment, the first signaling is transmitted on a PSCCH.

In one embodiment, steps marked by the box F171 in FIG. 17 exist; thefirst information block is used by the first node U4 for determining afirst index pair set; the third index-the first index pair belongs tothe first index pair set; whether the fourth index-the second index pairbelongs to the first index pair set is used to determine whether thesecond-type index corresponding to the target resource block set isaligned with the second-type index corresponding to the second resourceblock set.

In one embodiment, the first information block is transmitted on adownlink physical layer data channel (i.e., a downlink channel capableof carrying physical layer data).

In one embodiment, the first information block is transmitted on aPhysical Downlink Shared CHannel (PDSCH).

In one embodiment, the first information block is transmitted on aPhysical Sidelink Shared Channel (PSSCH).

In one embodiment, the steps marked by the box F171 in FIG. 17 do notexist.

In one embodiment, the step marked by the box F172 in FIG. 17 exists.

In one embodiment, the step marked by the box F172 in FIG. 17 does notexist.

In one embodiment, the step marked by the box F173 in FIG. 17 exists;the first access detection is used by the second node U3 for determiningthat the first signaling can be transmitted in the first resource block.

In one embodiment, the first resource block belongs to a referencesub-band in frequency domain, the first access detection is performed onthe reference sub-band, and the first access detection is used todetermine whether the reference sub-band is idle.

In one embodiment, an end time of the first access detection is no laterthan a start time of a time-domain resource occupied by the firstsignaling.

In one embodiment, the first access detection is Listen Before Talk(LBT).

In one embodiment, the first access detection is Category 4 LBT.

In one embodiment, the first access detection is Category 2 LBT.

In one embodiment, for the specific way of implementing LBT, refer to3GPP TR36.889.

In one embodiment, the first access detection is a Clear ChannelAssessment (CCA).

In one embodiment, for the specific way of implementing CCA, refer to3GPP TR36.889.

In one embodiment, the first access detection is implemented in a waydefined by 3GPP TS37.213, section 4.

In one embodiment, the first access detection is a DL Channel accessprocedure.

In one embodiment, for the specific way of implementing DL Channelaccess procedure, refer to 3GPP TS37.213, section 4.1.

In one embodiment, the first access detection is a Type 1 DL Channelaccess procedure.

In one embodiment, the first access detection is a Type 2 DL Channelaccess procedure.

In one embodiment, the first access detection is a UL Channel accessprocedure.

In one embodiment, for the specific way of implementing UL Channelaccess procedure, refer to 3GPP TS37.213, section 4.2.

In one embodiment, the first access detection is a Type 1 UL Channelaccess procedure.

In one embodiment, the first access detection is a Type 2UL Channelaccess procedure.

In one embodiment, the step marked by the box F174 in FIG. 17 exists.

In one embodiment, the step marked by the box F174 in FIG. 17 does notexist.

In one embodiment, the step marked by the box F175 in FIG. 17 exists.

In one embodiment, the step marked by the box F175 in FIG. 17 does notexist.

In one embodiment, the step marked by the box F176 in FIG. 17 exists.

In one embodiment, the step marked by the box F176 in FIG. 17 does notexist.

In one embodiment, the step marked by the box F177 in FIG. 17 exists.

In one embodiment, the step marked by the box F177 in FIG. 17 does notexist.

In one embodiment, the step marked by the box F178 in FIG. 17 exists.

In one embodiment, the step marked by the box F178 in FIG. 17 does notexist.

Embodiment 18

Embodiment 18 illustrates a schematic diagram of a given sub-bandaccording to one embodiment of the present disclosure; as shown in FIG.18. In Embodiment 18, the given sub-band is any one of the firstsub-band, the second sub-band or a sub-band to which the first signalingbelongs.

In one embodiment, the given sub-band is the first sub-band.

In one embodiment, the given sub-band is the second sub-band.

In one embodiment, the given sub-band is a sub-band to which the firstsignaling belongs.

In one embodiment, the given sub-band is deployed on UnlicensedSpectrum.

In one embodiment, the given sub-band is deployed on Licensed Spectrum.

In one embodiment, the given sub-band comprises a carrier.

In one embodiment, the given sub-band comprises multiple carriers.

In one embodiment, the given sub-band comprises a BWP.

In one embodiment, the given sub-band comprises multiple BWPs.

In one embodiment, the given sub-band comprises one Resource Block (RB)set or multiple consecutive RB sets in a BWP.

In one embodiment, the given sub-band is a contiguous frequency-domainzone.

In one embodiment, the given sub-band comprises a positive integernumber of (more than one) consecutive subcarriers in frequency domain.

In one embodiment, the first sub-band and the second sub-band aremutually orthogonal.

In one embodiment, the first sub-band is the second sub-band.

In one embodiment, the first sub-band and the second sub-bandrespectively belong to different serving cells.

In one embodiment, the first sub-band and the second sub-bandrespectively comprise two BWPs of different serving cells.

In one embodiment, the first sub-band and the second sub-band belong toa same serving cell.

In one embodiment, the first sub-band and the second sub-bandrespectively comprise different BWPs of a same serving cell.

Embodiment 19

Embodiment 19 illustrates a schematic diagram of a given time windowaccording to one embodiment of the present disclosure; as shown in FIG.19. In Embodiment 19, the given time window is any time window of thefirst time window, the second time window, the third time window or thefirst reference time window.

In one embodiment, the given time window is the first time window.

In one embodiment, the given time window is the second time window.

In one embodiment, the given time window is the third time window.

In one embodiment, the given time window is the first reference timewindow.

In one embodiment, the given time window is a contiguous duration.

In one embodiment, the given time window comprises a positive integernumber of consecutive multicarrier symbols.

In one embodiment, the given time window comprises a positive integernumber of consecutive first-type reference multicarrier symbols.

In one embodiment, the given time window comprises a positive integernumber of slots.

In one embodiment, the given time window comprises a positive integernumber of first-type reference slots.

In one embodiment, the given time window comprises a positive integernumber of second-type reference slots.

In one embodiment, the given time window is of a length no greater than10000 ms.

In one embodiment, the given time window is of a length no greater than10 ms.

In one embodiment, the first time window and the second time window aremutually orthogonal.

In one embodiment, an end of the first time window is no later than astart of the second time window.

In one embodiment, an end of the first time window is a start of thesecond time window.

In one embodiment, an end of the first time window is earlier than astart of the second time window.

In one embodiment, the third time window and the second time window areof equal length.

In one embodiment, the third time window and the second time window areof unequal lengths.

Embodiment 20

Embodiment 20 illustrates a schematic diagram of a given resource blockset according to one embodiment of the present disclosure; as shown inFIG. 20. In Embodiment 20, the given resource block set is any resourceblock set of the first resource block set, the second resource blockset, the target resource block set, the 2 candidate resource block setsor the third resource block set.

In one embodiment, the given resource block set is the first resourceblock set.

In one embodiment, the given resource block set is the second resourceblock set.

In one embodiment, the given resource block set is the target resourceblock set.

In one embodiment, the given resource block set is any one of the 2candidate resource block sets.

In one embodiment, the given resource block set is the third resourceblock set.

In one embodiment, the given resource block set comprises time-domainresources.

In one embodiment, the given resource block set comprisesfrequency-domain resources.

In one embodiment, the given resource block set occupies a positiveinteger number of RE(s) in time-frequency domain.

In one embodiment, an RE occupies a multicarrier symbol in time domainand a subcarrier in frequency domain.

In one embodiment, the given resource block set occupies a positiveinteger number of multicarrier symbol(s) in time domain.

In one embodiment, the given resource block set occupies a positiveinteger number of RB(s) in frequency domain.

In one embodiment, the given resource block set comprises a positiveinteger number of resource block(s).

In one embodiment, the given resource block set comprises a search spaceset group.

In one embodiment, the given resource block set is a search space setgroup.

In one embodiment, the given resource block set comprises a search spaceset.

In one embodiment, the given resource block set comprises all searchspace sets in a search space set group.

In one embodiment, the given resource block set comprises part of searchspace sets in a search space set group.

In one embodiment, the given resource block set comprises a CORESET.

In one embodiment, the given resource block set comprises one ormultiple PDCCH candidates.

In one embodiment, the given resource block set comprises all or part ofPDCCH candidates in a search space set.

In one embodiment, the given resource block set comprises all or part ofPDCCH candidates comprised by each search space set among all or part ofsearch space sets in a search space set group.

In one embodiment, any resource block in the given resource block setcomprises a search space set.

In one embodiment, any resource block in the given resource block setcomprises a CORESET.

In one embodiment, any resource block in the given resource block setcomprises a PDCCH candidate.

In one embodiment, any resource block in the given resource block setcomprises all or part of PDCCH candidates in a search space set.

In one embodiment, any two resource blocks in the given resource blockset respectively comprise all or part of PDCCH candidates comprised intwo search space sets in a same search space set group.

In one embodiment, any resource block in the given resource block setoccupies a positive integer number of RE(s) in time-frequency domain.

In one embodiment, any resource block in the given resource block setoccupies a positive integer number of multicarrier symbol(s) in timedomain.

In one embodiment, any resource block in the given resource block setoccupies a positive integer number of PRB(s) in frequency domain.

In one embodiment, the given resource block set comprises a UE-specificSearch Space set.

In one embodiment, the given resource block set comprises a CommonSearch Space set.

In one embodiment, the given resource block set does not comprise anyCommon Search Space set.

In one embodiment, the first resource block set and the second resourceblock set respectively comprise two different search space set groups ina same BWP.

In one embodiment, the first resource block set and the second resourceblock set respectively comprise all or part of PDCCH candidatescomprised in two different search space set groups in a same BWP.

In one embodiment, there is a search space set belonging to the firstresource block set and the second resource block set simultaneously.

In one embodiment, there isn't any search space set belonging to thefirst resource block set and the second resource block setsimultaneously.

In one embodiment, the first resource block comprises a search spaceset.

In one embodiment, the first resource block comprises a CORESET.

In one embodiment, the first resource block comprises a PDCCH candidate.

In one embodiment, the first resource block comprises all or part ofPDCCH candidates in a search space set.

In one embodiment, the first resource block comprises a Common SearchSpace set.

In one embodiment, the first resource block comprises a searchSpaceZero.

In one embodiment, a search space index corresponding to the firstresource block is 0.

In one embodiment, the first resource block occupies a positive integernumber of RE(s) in time-frequency domain.

In one embodiment, the first resource block occupies a positive integernumber of multicarrier symbol(s) in time domain.

In one embodiment, the first resource block occupies a positive integernumber of PRB(s) in frequency domain.

In one embodiment, the first resource block belongs to the firstresource block set.

In one embodiment, the first resource block does not belong to the firstresource block set.

In one embodiment, the first resource block belongs to the firstsub-band in frequency domain.

In one embodiment, the first resource block does not belong to the firstsub-band in frequency domain.

In one embodiment, the first resource block belongs to the first servingcell in frequency domain.

In one embodiment, the first resource block does not belong to the firstserving cell in frequency domain.

In one embodiment, a CORESETPoolIndex configured to a CORESET associatedwith the first resource block is equal to the first index.

In one embodiment, a CORESETPoolIndex configured to a CORESET associatedwith the first resource block is unequal to the first index.

In one embodiment, a CORESET associated with the first resource block isconfigured with a CORESETPoolIndex.

In one embodiment, the first resource block set corresponds to a saidfirst-type index and a said second-type index.

In one embodiment, the second resource block set corresponds to a saidfirst-type index and a said second-type index.

In one embodiment, the target resource block set corresponds to a saidfirst-type index and a said second-type index.

In one embodiment, the first-type index is a non-negative integer.

In one embodiment, the first-type index is either 0 or 1.

In one embodiment, the first-type index comprises a CORESETPoolIndex.

In one embodiment, the first-type index is a CORESETPoolIndex.

In one embodiment, the first-type index comprises a CORESET-ID.

In one embodiment, the first-type index comprises a search space setindex.

In one embodiment, a said second-type index is a non-negative integer.

In one embodiment, a said second-type index is 0 or 1.

In one embodiment, a said second-type index is 0, or 1 or 2.

In one embodiment, the second-type index comprises a search space setsgroup index.

In one embodiment, the second-type index is a search space sets groupindex.

In one embodiment, the second-type index comprises a CORESETPoolIndex.

In one embodiment, the second-type index comprises a CORESET-ID.

In one embodiment, the second-type index comprises a search space setindex.

In one embodiment, any resource block comprised by the given resourceblock set is a search space set.

In one embodiment, whether a CORESET associated with a resource block inthe given resource block set is configured with a CORESETPoolIndex alongwith, if configured, a value of the CORESETPoolIndex is used todetermine the first-type index corresponding to the given resource blockset.

In one embodiment, a value of the CORESETPoolIndex configured to aCORESET associated with a resource block in the given resource block setis used to determine the first-type index corresponding to the givenresource block set.

In one embodiment, the first-type index corresponding to the givenresource block set is a CORESETPoolIndex corresponding to a CORESETassociated with any resource block in the given resource block set.

In one embodiment, if a given CORESET is not configured with aCORESETPoolIndex, a CORESETPoolIndex corresponding to the given CORESETis equal to 0, and the given CORESET is a CORESET associated with anyresource block in the given resource block set.

In one embodiment, CORESETs respectively associated with any tworesource blocks in the given resource block set correspond to a sameCORESETPoolIndex.

In one embodiment, CORESETs respectively associated with any tworesource blocks in the given resource block set are configured withequal CORESETPoolIndexes.

In one embodiment, for any two given resource blocks in the givenresource block set, CORESETs associated with the two given resourceblocks are configured with equal CORESETPoolIndexes, or, at least one ofthe CORESETs associated with the two given resource blocks is notconfigured with a CORESETPoolIndex.

In one embodiment, if a CORESET associated with a resource block in thegiven resource block set is configured with a CORESETPoolIndex equal to0, a CORESET associated with any resource block in the given resourceblock set is configured with a CORESETPoolIndex equal to 0.

In one embodiment, if a CORESET associated with a resource block in thegiven resource block set is configured with a CORESETPoolIndex equal to0, a CORESET associated with any resource block in the given resourceblock set is configured with a CORESETPoolIndex equal to 0, or is notconfigured with any CORESETPoolIndex.

In one embodiment, if a CORESET associated with a resource block in thegiven resource block set is configured with a CORESETPoolIndex equal to1, a CORESET associated with any resource block in the given resourceblock set is configured with a CORESETPoolIndex equal to 1.

In one embodiment, if a CORESET associated with a resource block in thegiven resource block set is configured with a CORESETPoolIndex equal to1, a CORESET associated with any resource block in the given resourceblock set is configured with a CORESETPoolIndex equal to 1, or is notconfigured with any CORESETPoolIndex.

In one embodiment, there aren't two resource blocks in the givenresource block set with associated CORESETs being configured withunequal CORESETPoolIndexes.

In one embodiment, if a CORESET associated with a resource block in thegiven resource block set is configured with a CORESETPoolIndex equal to0, the first-type index corresponding to the given resource block set isequal to 0.

In one embodiment, if a CORESET associated with any resource block inthe given resource block set is not configured with a CORESETPoolIndex,the first-type index corresponding to the given resource block set isequal to 0.

In one embodiment, if there isn't any resource block in the givenresource block set with an associated CORESET being configured with aCORESETPoolIndex equal to 1, the first-type index corresponding to thegiven resource block set is equal to 0.

In one embodiment, if a CORESET associated with a resource block in thegiven resource block set is configured with a CORESETPoolIndex equal to1, the first-type index corresponding to the given resource block set isequal to 1.

In one embodiment, if the first node is configured with a CORESET in thefirst sub-band and the CORESET is not configured with aCORESETPoolIndex, the CORESET belongs to both the first resource blockset and the second resource block set.

In one embodiment, the first-type index corresponding to the givenresource block set is a CORESET-ID associated with any resource blockcomprised by the given resource block set.

In one embodiment, any two resource blocks in the given resource blockset are associated with a same CORESET.

In one embodiment, a search space sets group index configured for one ormore resource blocks comprised by the given resource block set is usedto determine a second-type index corresponding to the given resourceblock set.

In one embodiment, the second-type index corresponding to the givenresource block set is a search space sets group index configured to anyresource block comprised by the given resource block set.

In one embodiment, the second-type index corresponding to the givenresource block set is a search space sets group index equally configuredto all resource blocks comprised by the given resource block set.

In one embodiment, any resource block in the given resource block set isconfigured with one or two search space sets group indexes.

In one embodiment, any two resource blocks in the given resource blockset are configured with a same search space sets group index.

In one embodiment, any resource block in the given resource block set isconfigured with a search space sets group index, or is not configuredwith any search space sets group index; for any two given resourceblocks in the given resource block set, if both given resource blocksare configured with search space sets group indexes, the search spacesets group indexes configured for two given resource blocks are equal.

In one embodiment, any resource block in the given resource block set isnot configured with a search space sets group index.

In one embodiment, if any resource block in the given resource block setis not configured with a search space sets group index, the second-typeindex corresponding to the given resource block set is equal to a givenvalue, and the given value is an integer unequal to either 0 or 1.

In one subembodiment, the given value is a fixed one.

In one embodiment, any two resource blocks in the given resource blockset belong to a same search space set group.

In one embodiment, the given resource block set comprises only oneresource block, and the second-type index corresponding to the givenresource block set is a search space set index corresponding to the onlyone resource block.

In one embodiment, the second-type index corresponding to the firstresource block set is equal to 0, while the second-type indexcorresponding to the second resource block set is equal to 1.

In one embodiment, the second-type index corresponding to the firstresource block set is equal to 1, while the second-type indexcorresponding to the second resource block set is equal to 0.

Embodiment 21

Embodiment 21 illustrates a schematic diagram of a given serving cellcorresponding to a third-type index according to one embodiment of thepresent disclosure; as shown in FIG. 21. In Embodiment 21, the givenserving cell is any one of the first serving cell, the second servingcell or a serving cell to which the first signaling belongs.

In one embodiment, the given serving cell is the first serving cell.

In one embodiment, the given serving cell is the second serving cell.

In one embodiment, the given serving cell is a serving cell to which thefirst signaling belongs.

In one embodiment, the given serving cell is added by the first node.

In one embodiment, the given serving cell is a Primary serving Cell(PCell) for the first node.

In one embodiment, the first node performs SCell addition for the givenserving cell.

In one embodiment, a latest sCellToAddModList or sCellToAddModListSCGreceived by the first node comprises the given serving cell.

In one embodiment, the first node is assigned with a SCellIndex or aServCellIndex for the given serving cell.

In one embodiment, an index of the given serving cell is a CellIdentity.

In one embodiment, an index of the given serving cell is a PhysCellId.

In one embodiment, an index of the given serving cell is a SCellIndex.

In one embodiment, an index of the given serving cell is aServCellIndex.

In one embodiment, the third-type index is a non-negative integer.

In one embodiment, the third-type index is a non-negative integer nogreater than 31.

In one embodiment, the third-type index comprises a serving cell index.

In one embodiment, the third-type index comprises a SCellIndex.

In one embodiment, the third-type index comprises a ServCellIndex.

In one embodiment, the third-type index comprises a CellIdentity.

In one embodiment, the third-type index comprises a PhysCellId.

In one embodiment, the third-type index comprises a BWP index.

In one embodiment, the third-type index comprises a serving cell groupindex.

In one embodiment, the third-type index is a non-negative integer nogreater than 3.

In one embodiment, an index of the given serving cell is used todetermine a third-type index corresponding to the given serving cell.

In one embodiment, the third-type index corresponding to the givenserving cell is an index of the given serving cell.

In one embodiment, the third-type index corresponding to the givenserving cell is an index of a serving cell group to which the givenserving cell belongs.

In one embodiment, the first node is configured with W2 serving cellgroup(s), W2 being a positive integer; the W2 serving cell group(s)is(are respectively) configured with W2 serving cell group index(es),and the W2 serving cell group(s) is(are respectively) identified by theW2 serving cell group index(es); the given serving cell belongs to aserving cell group of the W2 serving cell group(s), and a third-typeidentifier for the given serving cell is a serving cell group indexconfigured to the serving cell group to which the given serving cellbelongs.

In one embodiment, a switch between a search space set group 0 and asearch space set group 1 occurs synchronously among serving cellscomprised by any one of the W2 serving cell group(s).

In one embodiment, a switch between a search space set group 0 and asearch space set group 1 for a same CORESETPoolIndex occurssynchronously among serving cells comprised by any one of the W2 servingcell group(s).

In one embodiment, a switch between a search space set group 0 and asearch space set group 1 for a value of any given said first-type indexoccurs synchronously among serving cells comprised by any one of the W2serving cell group(s).

In one embodiment, if the given serving cell belongs to one of the W2serving cell group(s), the third-type index corresponding to the givenserving cell is a serving cell group index configured to a serving cellgroup to which the given serving cell belongs; if the given serving cellbelongs to any one of the W2 serving cell group(s), the third-type indexcorresponding to the given serving cell is an index of the given servingcell.

In one embodiment, the W2 serving cell group(s) is (are) configured byhigher layer signaling(s).

In one embodiment, a name of a signaling for configuring the W2 servingcell group(s) includes PDCCH.

In one embodiment, if the first serving cell and the second serving cellbelong to a same serving cell group of the W2 serving cell group(s), thethird index is equal to the fourth index; if the first serving cell andthe second serving cell do not belong to a same serving cell group ofthe W2 serving cell group(s), the third index is unequal to the fourthindex.

In one embodiment, the W1 serving cells belong to a same serving cellgroup of the W2 serving cell group(s).

In one embodiment, if the first serving cell is the second serving cell,the third index is equal to the fourth index.

Embodiment 22

Embodiment 22 illustrates a schematic diagram of a first informationblock according to one embodiment of the present disclosure; as shown inFIG. 22. In Embodiment 22, the first information block is used fordetermining the first index pair set.

In one embodiment, the first information block is carried by a higherlayer signaling

In one embodiment, the first information block is carried by a RadioResource Control (RRC) signaling

In one embodiment, the first information block is carried by a MediumAccess Control layer Control Element (MAC CE) signaling

In one embodiment, the first information block is jointly carried by anRRC signaling and a MAC CE.

In one embodiment, the first information block comprises information inall or part of fields of an Information Element (IE).

In one embodiment, the first information block comprises information inall or part of fields of a PDCCH-Config IE.

In one embodiment, the first information block comprises all or part ofinformation in a searchSpaceSwitchingGroupList-r16 field of aPDCCH-Config IE.

In one embodiment, for any two given index pairs of the K index pairs,the third-type indexes respectively comprised by the two given indexpairs are unequal, or the first-type indexes respectively comprised bythe two given index pairs are unequal, or the third-type indexes and thefirst-type indexes respectively comprised by the two given index pairsare unequal.

In one embodiment, among the K index pairs there are two index pairs bywhich the third-type indexes comprised are equal.

In one embodiment, among the K index pairs there are two index pairs bywhich the third-type indexes comprised are unequal.

In one embodiment, the first information block comprises a first bitfield, and the first bit field indicates each index pair in the firstindex pair set; the first bit field comprises a positive integer numberof bit(s).

In one embodiment, the first information block comprises a second bitfield, and the second bit field indicates P1 index group(s), P1 being apositive integer; any of the P1 index group(s) is used to determine oneor more index pairs out of the K index pairs; any of the P1 indexgroup(s) comprises one index or two; for any given index group of the P1index group(s), if the given index group only comprises an index, thegiven index group comprises the third-type index; if the given indexgroup comprises two indexes, the given index group comprises thethird-type index and the first-type index; the second bit fieldcomprises a positive integer number of bit(s).

In one subembodiment, P1 is equal to K.

In one subembodiment, P1 is less than K.

In one subembodiment, if the given index group only comprises one saidthird-type index, the K index pairs include a first referenceindex—second reference index pair and the first reference index—thirdreference index pair; the first reference index is the third-type indexcomprised by the given index group, while the second reference index andthe third reference index are two said first-type indexes respectively,the second reference index and the third reference index respectivelybeing equal to 0 and 1.

In one subembodiment, if the given index group comprises one saidthird-type index and one said first-type index, the K index pairsinclude a first reference index—fourth reference index pair; the firstreference index is the third-type index comprised by the given indexgroup, and the fourth reference index is the first-type index comprisedby the given index group.

Embodiment 23

Embodiment 23 illustrates a schematic diagram of a first index, a secondindex, a third index and a fourth index jointly being used to determinewhether a second-type index corresponding to a target resource block setaligns with a second-type index corresponding to a second resource blockset according to one embodiment of the present disclosure; as shown inFIG. 23. In Embodiment 23, if the fourth-index—the second index pairbelongs to the first index pair set, the second-type index correspondingto the target resource block set aligns with the second-type indexcorresponding to the second resource block set; if the fourth-index—thesecond index pair does not belong to the first index pair set, thesecond-type index corresponding to the target resource block set is notaligned with the second-type index corresponding to the second resourceblock set.

Embodiment 24

Embodiment 24 illustrates a schematic diagram of a first index, a secondindex, a third index and a fourth index jointly being used to determinewhether a second-type index corresponding to a target resource block setaligns with a second-type index corresponding to a second resource blockset according to one embodiment of the present disclosure; as shown inFIG. 24. In Embodiment 24, if the third index is equal to the fourthindex and the first index is equal to the second index, the second-typeindex corresponding to the target resource block set aligns with thesecond-type index corresponding to the second resource block set; if thethird index is equal to the fourth index and the first index is unequalto the second index, the second-type index corresponding to the targetresource block set is not aligned with the second-type indexcorresponding to the second resource block set.

In one embodiment, when the third index is unequal to the fourth index,the second-type index corresponding to the target resource block set isnot aligned with the second-type index corresponding to the secondresource block set.

In one embodiment, if the third index is unequal to the fourth index,the second-type index corresponding to the target resource block set isnot aligned with the second-type index corresponding to the secondresource block set.

Embodiment 25

Embodiment 25 illustrates a schematic diagram of a first signaling, afirst reference time window and a first reference time according to oneembodiment of the present disclosure; as shown in FIG. 25. In Embodiment25, the first signaling is used by the first node for determining thefirst reference time window, an end of the first reference time windowis used by the first node for determining the first reference time, andan end of the second time window is no later than the first referencetime.

In one embodiment, when and only when the second-type indexcorresponding to the second resource block set is equal to 1 is thefirst signaling used for determining the first reference time window.

In one embodiment, if the second-type index corresponding to the secondresource block set is equal to 1, the first signaling is used todetermine the first reference time window.

In one embodiment, when and only when the second-type indexcorresponding to the second resource block set is equal to 1 is thefirst reference time used for determining an end of the second timewindow.

In one embodiment, if the second-type index corresponding to the secondresource block set is equal to 1, the first reference time is used todetermine an end of the second time window.

In one embodiment, the first reference time window comprises a positiveinteger number of the third-type reference slot(s).

In one embodiment, the first reference time window comprises a positiveinteger number of fourth-type reference slot(s), the fourth-typereference slot being a slot whose corresponding subcarrier spacing is asubcarrier spacing corresponding to the first signaling.

In one embodiment, an end of the second time window is the firstreference time.

In one embodiment, an end of the second time window is earlier than thefirst reference time.

In one embodiment, the first reference time is an end of the firstreference time window.

In one embodiment, the first reference time is an end time of a lasttime unit occupied by the first reference time window.

In one embodiment, the first reference time is a start time of anearliest time unit with the start time no earlier than an end of thefirst reference time window.

In one embodiment, a second symbol is a last multicarrier symboloccupied by the first reference time window, and the first referencetime is a start time of an earliest time unit after at least P1 symbolssubsequent to the second symbol.

In one subembodiment, a time interval between the first reference timeand an end time of the second symbol is no smaller than P1 symbols.

In one embodiment, a length of the second symbol is determined on thebasis of a first reference subcarrier spacing.

In one embodiment, a length of the second symbol is determined on thebasis of a second reference subcarrier spacing.

In one embodiment, the second symbol is a multicarrier symbol for afirst reference subcarrier spacing.

In one embodiment, the second symbol is a multicarrier symbol for asecond reference subcarrier spacing.

In one embodiment, the first signaling comprises a second bit string,and the second bit string in the first signaling indicates the firstreference time window.

In one embodiment, the second bit string in the first signalingindicates a channel occupancy duration.

In one embodiment, the second bit string in the first signalingindicates a Slot Format Indicator (SF1).

In one embodiment, the first signaling comprises a second field, and thesecond field in the first signaling indicates M2 bit strings, M2 being apositive integer greater than 1; the second bit string is one of the M2bit strings.

In one embodiment, any of the M2 bit strings corresponds to a saidthird-type index.

In one embodiment, any of the M2 bit strings corresponds to a saidthird-type index—the first-type index pair.

In one embodiment, the second bit string corresponds to the third index.

In one embodiment, the second bit string corresponds to the thirdindex—the first index pair.

In one embodiment, a position of the second bit string in the M2 bitstrings is configured by a higher layer signaling.

In one embodiment, a name of a higher layer signaling for configuring aposition of the second bit string in the M2 bit strings includesSlotFormat.

In one embodiment, the second bit string comprises a positive integernumber of bit(s).

In one embodiment, an end of the first reference time window is an endtime of a channel occupancy duration.

In one embodiment, W3 time windows respectively correspond to W3 servingcells of W1 serving cells, W1 being a positive integer greater than 1and W3 being a positive integer no greater than W1 and greater than 1;the W3 time windows share a same start time, each of the W1 servingcells is added by the first node; the first serving cell is one of theW1 serving cells; the first reference time window is one of the W3 timewindows with an earliest end time.

In one subembodiment, W3 is less than W1.

In one subembodiment, W3 is equal to W1.

In one subembodiment, W3 subcarrier spacings respectively correspond toW3 serving cells; and the W3 subcarrier spacings are respectively usedto determine lengths of the W3 time windows.

In one subembodiment, the W3 subcarrier spacings are respectivelyconfigured by higher layer signalings.

In one subembodiment, any of the W3 subcarrier spacings is a smallestone of subcarrier spacings corresponding to all BWPs configured in acorresponding serving cell.

In one subembodiment, the W3 subcarrier spacings are respectivelysubcarrier spacings corresponding to active BWPs in the W3 servingcells.

Embodiment 26

Embodiment 26 illustrates a schematic diagram of a first nodeconfiguring a first counter according to one embodiment of the presentdisclosure; as shown in FIG. 26. In Embodiment 26, upon detection of thefirst signaling, the first node sets the first counter's value as thefirst time length and decrements the first counter by 1 for each passedsecond-type reference slot; the third reference subcarrier spacing isused to determine a length of a said second-type reference slot; a timeof expiration of the first counter is used to determine the secondreference time, and an end of the second time window is no later thanthe second reference time.

In one embodiment, the phrase of setting a first counter's value to afirst time length means initializing the first counter and setting aninitialized value of the first counter to the first time length.

In one embodiment, the first node decrements the first counter by 1 foreach second-type reference slot passed only after initializing the firstcounter.

In one embodiment, when and only when the second-type indexcorresponding to the second resource block set is equal to 1 will thefirst node set the first counter's value to the first time length afterdetecting the first signaling.

In one embodiment, if the second-type index corresponding to the secondresource block set is equal to 1, the first node will set the firstcounter's value to the first time length after detecting the firstsignaling.

In one embodiment, when and only when the second-type indexcorresponding to the second resource block set is equal to 1 will thesecond reference time be used to determine an end of the second timewindow.

In one embodiment, the first time length is serving cell-common.

In one embodiment, the first time length is configured per serving cell.

In one embodiment, the first time length is serving-cell group-common.

In one embodiment, the first time length is configured per serving cellgroup.

In one embodiment, the first time length is configured by a higher layersignaling.

In one embodiment, the first time length is configured by an RRCsignaling.

In one embodiment, a name of a higher layer signaling for configuringthe first time length includes PDCCH.

In one embodiment, a name of a higher layer signaling for configuringthe first time length includes SlotFormat.

In one embodiment, the first time length is a positive integer.

In one embodiment, the first time length is measured by a unit of thesecond-type reference slot.

In one embodiment, the second-type reference slot is a slotcorresponding to the third reference subcarrier spacing.

In one embodiment, the first serving cell is one of W1 serving cells, W1being a positive integer greater than 1, and the W1 serving cells areadded by the first node; W1 time lengths respectively correspond to theW1 serving cells; the first time length is a shortest or a longest timelength of the W1 time lengths; subcarrier spacings corresponding toactive BWPs in the W1 serving cells are respectively used fordetermining the W1 time lengths.

In one embodiment, for any given second-type reference slot, when andonly when the first node monitors a PDCCH in a search space set with acorresponding search space sets group index being 1 in the givensecond-type reference slot will the first node decrement the firstcounter by 1 upon an end of the given second-type reference slot.

In one embodiment, the first serving cell is one of W1 serving cells, W1being a positive integer greater than 1, and the W1 serving cells areadded by the first node; the third reference subcarrier spacing is asmallest one of subcarrier spacings corresponding to active BWPs in theW1 serving cells.

In one embodiment, the first serving cell is one of W1 serving cells, W1being a positive integer greater than 1, and the W1 serving cells areadded by the first node; the third reference subcarrier spacing is asmallest one of subcarrier spacings corresponding to all BWPs configuredin the W1 serving cells.

In one embodiment, an end of the second time window is the secondreference time.

In one embodiment, an end of the second time window is earlier than thesecond reference time.

In one embodiment, an end of the second time window is an earlier one ofthe first reference time and the second reference time.

In one embodiment, the second reference time is a time of expiration ofthe first counter.

In one embodiment, the second reference time is an end time of a timeunit in which the first counter is expired.

In one embodiment, a second time unit is a time unit in which the firstcounter is expired, and the second reference time is a start time of anearliest time unit after at least P1 symbols subsequent to the secondtime unit.

In one subembodiment, a time interval between the second reference timeand an end time of the second time unit is no smaller than P1 symbols.

Embodiment 27

Embodiment 27 illustrates a schematic diagram of a first signaling, afirst reference signal group and a target resource block set accordingto one embodiment of the present disclosure; as shown in FIG. 27. InEmbodiment 27, the first signaling is used by the first node fordetermining the first reference signal group; the first reference signalgroup is used by the first node for determining the target resourceblock set from the third resource block set.

In one embodiment, when and only when the second-type indexcorresponding to the target resource block set is not aligned with thesecond-type index corresponding to the second resource block set willthe first reference signal group be used for determining the targetresource block set from the third resource block set.

In one embodiment, when and only when the second-type indexcorresponding to the target resource block set is not aligned with thesecond-type index corresponding to the second resource block set and thethird index is equal to the fourth index will the first reference signalgroup be used for determining the target resource block set from thethird resource block set.

In one embodiment, the third resource block set corresponds to a saidfirst-type index and a said third-type index, the first-type indexcorresponding to the third resource block set is the second index, andthe third-type index corresponding to the third resource block set isthe fourth index.

In one embodiment, the target resource block set comprises all resourceblocks comprised in the third resource block set.

In one embodiment, the target resource block set comprises only someresource blocks comprised in the third resource block set.

In one embodiment, the first reference signal group comprises one ormore than one reference signal.

In one embodiment, any reference signal in the first reference signalgroup comprises a Channel State Information-Reference Signal (CSI-RS) ora Synchronisation Signal/physical broadcast channel Block (SSB).

In one embodiment, an indicator of any reference signal in the firstreference signal group is either a CSI-RS Resource Indicator (CRI) or aSSB Resource indicator (SSBRI).

In one embodiment, the first signaling comprises a bit field, and thebit field indicates each reference signal in the first reference signalgroup.

In one subembodiment, the bit field indicates an indicator of eachreference signal in the first reference signal group.

In one embodiment, an antenna port of DMRS of the first signaling isused to determine the first reference signal group.

In one embodiment, any reference signal in the first reference signalgroup and an antenna port of DMRS of the first signaling areQuasi-Co-Located (QCL).

In one embodiment, any reference signal in the first reference signalgroup and an antenna port of DMRS of the first signaling are QCL,corresponding to QCL-TypeD.

In one embodiment, a time-frequency resource occupied by the firstsignaling determines the first reference signal group.

In one embodiment, a Transmission Configuration Indicator (TCI) statecorresponding to a CORESET to which the first signaling belongsindicates a first reference signal; any reference signal in the firstreference signal group is QCLed with the first reference signal.

In one subembodiment, any reference signal in the first reference signalgroup is QCLed with the first reference signal, corresponding toQCL-TypeD.

In one embodiment, the target resource block set comprises resourceblock(s) of which each fulfills a first condition in the third resourceblock set.

In one embodiment, the first condition comprises: for any given resourceblock fulfilling the first condition in the third resource block set,there isn't any reference signal comprised in the first reference signalset being QCL with a reference signal indicated by a TCI state of thegiven resource block.

In one embodiment, the first condition comprises: for any given resourceblock fulfilling the first condition in the third resource block set,there isn't any reference signal comprised in the first reference signalset being QCL, let alone corresponding to QCL-TypeD, with a referencesignal indicated by a TCI state of the given resource block.

In one embodiment, the first reference signal set comprises P2 referencesignal(s), P2 being a positive integer, and the P2 reference signal(s)corresponds(correspond) to P2 reference signal group(s) respectively.

In one subembodiment, the first condition comprises: for any givenresource block fulfilling the first condition in the third resourceblock set, there isn't a reference signal comprised in the P2 referencesignal group(s) being QCL with a reference signal indicated by a TCIstate of the given resource block.

In one subembodiment, the first condition comprises: for any givenresource block fulfilling the first condition in the third resourceblock set, there isn't a reference signal comprised in the P2 referencesignal group(s) being QCL, let alone corresponding to QCL-TypeD, with areference signal indicated by a TCI state of the given resource block.

In one embodiment, for any given reference signal in the first referencesignal set, a reference signal group corresponding to the givenreference signal is configured by a higher layer signaling

In one embodiment, any one of the P2 reference signal group(s) comprisesone or more reference signals.

In one embodiment, any reference signal in the P2 reference signalgroup(s) is a CSI-RS or an SSB.

Embodiment 28

Embodiment 28 illustrates a structure block diagram of a processingdevice in a first node according to one embodiment of the presentdisclosure; as shown in FIG. 28. In FIG. 28, a processing device 2800 ina first node comprises a first processor 2801.

In Embodiment 28, the first processor 2801 monitors a first-typesignaling in a first resource block in a first time window in a firstsub-band, and receives a first signaling in a first resource block,monitors a second-type signaling in a second resource block set in asecond time window in the first sub-band, and monitors a third-typesignaling in a target resource block set in a third time window in asecond sub-band.

In Embodiment 28, the first signaling is used by the first node fordetermining to monitor the second-type signaling in the second resourceblock set in the second time window in the first sub-band; the firstsignaling is used to determine a first index and a third index, thefirst index being a first-type index, and the third index being athird-type index; any one of the first resource block set, the secondresource block set and the target resource block set corresponds to asaid first-type index and a second-type index; the first-type indexcorresponding to the first resource block set and the first-type indexcorresponding to the second resource block set are both equal to thefirst index, while the second-type index corresponding to the firstresource block set is unequal to the second-type index corresponding tothe second resource block set; the first-type index corresponding to thetarget resource block set is equal to a second index; the first sub-bandand the second sub-band respectively belong to a first serving cell anda second serving cell, and the first serving cell and the second servingcell respectively correspond to two said third-type indexes; thethird-type index corresponding to the first serving cell is equal to thethird index, and the third-type index corresponding to the secondserving cell is equal to a fourth index; the first index, the secondindex, the third index and the fourth index are jointly used todetermine whether the second-type index corresponding to the targetresource block set aligns with the second-type index corresponding tothe second resource block set; the first signaling is used to determinea start of the second time window, a start of the third time windowbeing the same as the start of the second time window.

In one embodiment, the first processor 2801 receives a first informationblock; herein, the first information block is used to determine a firstindex pair set; the first index pair set comprises K index pairs, Kbeing a positive integer greater than 1; any index pair in the firstindex pair set comprises one said third-type index and one saidfirst-type index; the third index-the first index pair belongs to thefirst index pair set; when the fourth index-the second index pairbelongs to the first index pair set, the second-type index correspondingto the target resource block set aligns with the second-type indexcorresponding to the second resource block set; when the fourthindex-the second index pair does not belong to the first index pair set,the second-type index corresponding to the target resource block setdoes not align with the second-type index corresponding to the secondresource block set.

In one embodiment, when the third index is equal to the fourth index andthe first index is equal to the second index, the second-type indexcorresponding to the target resource block set aligns with thesecond-type index corresponding to the second resource block set; whenthe third index is equal to the fourth index and the first index isunequal to the second index, the second-type index corresponding to thetarget resource block set does not align with the second-type indexcorresponding to the second resource block set.

In one embodiment, the first signaling is used to determine a firstreference time window, an end of the first reference time window is usedto determine a first reference time, and an end of the second timewindow is no later than the first reference time.

In one embodiment, the first processor 2801 configures a first counter'svalue to a first time length after the first signaling is detected.

In one embodiment, the first processor 2801 decrements the first counterby 1 for each second-type reference slot passed; herein, a thirdreference subcarrier spacing (SCS) is used to determine a length of onesaid second-type reference slot; a time of expiration of the firstcounter is used to determine a second reference time, and an end of thesecond time window is no later than the second reference time.

In one embodiment, the first signaling is used to determine a firstreference signal group; any resource block comprised by the targetresource block set is a resource block in a third resource block set;the first reference signal group is used to determine the targetresource block set from the third resource block set.

In one embodiment, the first node is a UE.

In one embodiment, the first node is a relay node.

In one embodiment, the first processor 2801 comprises at least one ofthe antenna 452, the receiver 454, the receiving processor 456, themulti-antenna receiving processor 458, the controller/processor 459, thememory 460 or the data source 467 in Embodiment 4.

Embodiment 29

Embodiment 29 illustrates a structure block diagram of a processingdevice in a second node according to one embodiment of the presentdisclosure; as shown in FIG. 29. In FIG. 29, a processing device 2900 ina second node comprises a second processor 2901.

In Embodiment 29, the second processor 2901 transmitting a first-typesignaling in a first resource block set in a first time window in afirst sub-band, or, drops transmitting the first-type signaling in thefirst resource block set in the first time window in the first sub-band;the second processor 2901 transmits a first signaling in a firstresource block; the second processor 2901 transmits a second-typesignaling in a second resource block set in a second time window in thefirst sub-band, or, drops transmitting the second-type signaling in thesecond resource block set in the second time window in the firstsub-band; and the second processor 2901 transmits a third-type signalingin a target resource block set in a third time window in a secondsub-band, or, drops transmitting the third-type signaling in the targetresource block set in the third time window in the second sub-band.

In Embodiment 29, the first signaling is used for determining to monitorthe second-type signaling in the second resource block set in the secondtime window in the first sub-band; the first signaling is used todetermine a first index and a third index, the first index being afirst-type index, and the third index being a third-type index; any oneof the first resource block set, the second resource block set and thetarget resource block set corresponds to a said first-type index and asecond-type index; the first-type index corresponding to the firstresource block set and the first-type index corresponding to the secondresource block set are both equal to the first index, while thesecond-type index corresponding to the first resource block set isunequal to the second-type index corresponding to the second resourceblock set; the first-type index corresponding to the target resourceblock set is equal to a second index; the first sub-band and the secondsub-band respectively belong to a first serving cell and a secondserving cell, and the first serving cell and the second serving cellrespectively correspond to two said third-type indexes; the third-typeindex corresponding to the first serving cell is equal to the thirdindex, and the third-type index corresponding to the second serving cellis equal to a fourth index; the first index, the second index, the thirdindex and the fourth index are jointly used to determine whether thesecond-type index corresponding to the target resource block set alignswith the second-type index corresponding to the second resource blockset; the first signaling is used to determine a start of the second timewindow, a start of the third time window being the same as the start ofthe second time window.

In one embodiment, the second processor 2901 transmits a firstinformation block; herein, the first information block is used todetermine a first index pair set; the first index pair set comprises Kindex pairs, K being a positive integer greater than 1; any index pairin the first index pair set comprises one said third-type index and onesaid first-type index; the third index-the first index pair belongs tothe first index pair set; when the fourth index-the second index pairbelongs to the first index pair set, the second-type index correspondingto the target resource block set aligns with the second-type indexcorresponding to the second resource block set; when the fourthindex-the second index pair does not belong to the first index pair set,the second-type index corresponding to the target resource block setdoes not align with the second-type index corresponding to the secondresource block set.

In one embodiment, when the third index is equal to the fourth index andthe first index is equal to the second index, the second-type indexcorresponding to the target resource block set aligns with thesecond-type index corresponding to the second resource block set; whenthe third index is equal to the fourth index and the first index isunequal to the second index, the second-type index corresponding to thetarget resource block set does not align with the second-type indexcorresponding to the second resource block set.

In one embodiment, the first signaling is used to determine a firstreference time window, an end of the first reference time window is usedto determine a first reference time, and an end of the second timewindow is no later than the first reference time.

In one embodiment, a target receiver of the first signaling configures afirst counter's value to a first time length after the first signalingis detected.

In one embodiment, the first counter is decremented by 1 for eachsecond-type reference slot passed; a third reference subcarrier spacing(SCS) is used to determine a length of one said second-type referenceslot; a time of expiration of the first counter is used to determine asecond reference time, and an end of the second time window is no laterthan the second reference time.

In one embodiment, the first signaling is used to determine a firstreference signal group; any resource block comprised by the targetresource block set is a resource block in a third resource block set;the first reference signal group is used to determine the targetresource block set from the third resource block set.

In one embodiment, the second node is a base station.

In one embodiment, the second node is a UE.

In one embodiment, the second node is a relay node.

In one embodiment, the second processor 2901 comprises at least one ofthe antenna 420, the transmitter 418, the transmitting processor 416,the multi-antenna transmitting processor 471, the controller/processor475 or the memory 476 in Embodiment 4.

The ordinary skill in the art may understand that all or part of stepsin the above method may be implemented by instructing related hardwarethrough a program. The program may be stored in a computer readablestorage medium, for example Read-Only-Memory (ROM), hard disk or compactdisc, etc. Optionally, all or part of steps in the above embodimentsalso may be implemented by one or more integrated circuits.Correspondingly, each module unit in the above embodiment may beimplemented in the form of hardware, or in the form of software functionmodules. The present disclosure is not limited to any combination ofhardware and software in specific forms. The UE and terminal in thepresent disclosure include but are not limited to unmanned aerialvehicles, communication modules on unmanned aerial vehicles,telecontrolled aircrafts, aircrafts, diminutive airplanes, mobilephones, tablet computers, notebooks, vehicle-mounted communicationequipment, wireless sensor, network cards, terminals for Internet ofThings (JOT), RFID terminals, NB-JOT terminals, Machine TypeCommunication (MTC) terminals, enhanced MTC (eMTC) terminals, datacards, low-cost mobile phones, low-cost tablet computers, etc. The basestation or system device in the present disclosure includes but is notlimited to macro-cellular base stations, micro-cellular base stations,home base stations, relay base station, gNB (NR node B), TransmitterReceiver Point (TRP), and other radio communication equipment.

The above are merely the preferred embodiments of the present disclosureand are not intended to limit the scope of protection of the presentdisclosure. Any modification, equivalent substitute and improvement madewithin the spirit and principle of the present disclosure are intendedto be included within the scope of protection of the present disclosure.

What is claimed is:
 1. A first node for wireless communications,comprising: a first transmitter, transmitting a first signal; and afirst processor, monitoring a first-type signaling in a first resourceblock in a first time window in a first sub-band; wherein the firstsignal is used to determine a first reference signal; for the monitoringon the first-type signaling in the first resource block in the firsttime window, the first node assumes same QCL parameters as a targetreference signal; the target reference signal is either the firstreference signal or a second reference signal; whether the first timewindow belongs to a first-type time window is used to determine thetarget reference signal between the first reference signal and thesecond reference signal; any said first-type time window corresponds toa reference signal group, a target time window is the first-type timewindow, and the target time window corresponds to a target referencesignal group; when the first time window belongs to the target timewindow, whether the first reference signal and one reference signal fromthe target reference signal group are QCLed is used to determine thetarget reference signal between the first reference signal and thesecond reference signal.
 2. The first node according to claim 1, whereinthe first processor receives a first signaling, wherein the first timewindow belongs to the target time window, and the first signaling isused to determine the target time window and the target reference signalgroup; or, the first processor performs a first access detection, andthe first transmitter transmits a second signal upon completion of thefirst access detection, wherein the first time window belongs to thetarget time window, and the second signal is used to determine thetarget time window and the target reference signal group.
 3. The firstnode according to claim 1, wherein the first processor determineswhether to receive a given first-type reference signal in a first giventransmission occasion, and for each first-type reference signalcomprised in a first-type reference signal set, the first processordetermines whether a first condition is fulfilled; wherein whether eachfirst-type reference signal comprised in the first-type reference signalset fulfills the first condition is used to determine whether the firstsignal is transmitted; the first node determines that each first-typereference signal comprised in the first-type reference signal setfulfills the first condition, and determines to transmit the firstsignal; the given first-type reference signal is any first-typereference signal comprised in the first-type reference signal set, afirst transmission occasion set is reserved for the given first-typereference signal, and the first given transmission occasion is onetransmission occasion in the first transmission occasion set; when thegiven first-type reference signal fulfills one of a first conditionsubset and a second condition subset, the given first-type referencesignal fulfills the first condition; the first condition subsetcomprises: a number of transmission occasions comprised by a firstoccasion subset is greater than a first threshold; the first node dropsreceiving the given first-type reference signal in the first occasionsubset, the first occasion subset being a subset of the firsttransmission occasion set; the second condition subset comprises: afirst received quality is worse than a second threshold; a measurementon the given first-type reference signal in a second occasion subset isused to determine the first received quality, and the first nodereceives the given first-type reference signal in the second occasionsubset, the second occasion subset being a subset of the firsttransmission occasion set.
 4. The first node according to claim 1,wherein the first processor determines whether to receive a givensecond-type reference signal in a second given transmission occasion,and for each second-type reference signal comprised in a second-typereference signal set, the first processor determines whether a secondcondition is fulfilled; wherein a second-type reference signal subset iscomposed of second-type reference signals comprised in the second-typereference signal set that fulfill the second condition, and the firstreference signal is a second-type reference signal in the second-typereference signal subset; the given second-type reference signal is anysecond-type reference signal comprised in the second-type referencesignal set, a second transmission occasion set is reserved for the givensecond-type reference signal, and the second given transmission occasionis one transmission occasion in the second transmission occasion set;when the given second-type reference signal fulfills both a thirdcondition subset and a fourth condition subset, the given second-typereference signal fulfills the second condition; the third conditionsubset comprises: a number of transmission occasions comprised by athird occasion subset is greater than a third threshold; the first nodereceives the given second-type reference signal in the third occasionsubset, the third occasion subset being a subset of the secondtransmission occasion set; the fourth condition subset comprises: asecond channel quality is greater than or equal to a fourth threshold; ameasurement on the given second-type reference signal in the thirdoccasion subset is used to determine the second channel quality.
 5. Thefirst node according to claim 1, wherein any said first-type time windowbelongs to a channel occupancy duration.
 6. The first node according toclaim 1, wherein the first signal comprises a RACH Preamble, and asearch space set to which the first resource block belongs is identifiedby a recoverySearchSpaceId.
 7. The first node according to claim 1,wherein the target reference signal group comprises K reference signals,K being a positive integer greater than 1; the K reference signalsrespectively correspond to K indexes, and the K indexes are used todetermine the second reference signal out of the K reference signals;the K indexes are non-negative integers, respectively.
 8. A second nodefor wireless communications, comprising: a first receiver, receiving afirst signal; and a second processor, transmitting a first-typesignaling in a first resource block in a first time window in a firstsub-band, or, dropping transmitting the first-type signaling in thefirst resource block in the first time window in the first sub-band;wherein the first signal is used to determine a first reference signal;a transmitter of the first signal assumes same QCL parameters as atarget reference signal for monitoring the first-type signaling in thefirst resource block in the first time window in the first sub-band; thetarget reference signal is either the first reference signal or a secondreference signal; whether the first time window belongs to a first-typetime window is used to determine the target reference signal between thefirst reference signal and the second reference signal; any saidfirst-type time window corresponds to a reference signal group, a targettime window is the first-type time window, and the target time windowcorresponds to a target reference signal group; when the first timewindow belongs to the target time window, whether the first referencesignal and one reference signal from the target reference signal groupare QCLed is used to determine the target reference signal between thefirst reference signal and the second reference signal.
 9. The secondnode according to claim 8, wherein the second processor transmits afirst signaling, wherein the first time window belongs to the targettime window, and the first signaling is used to determine the targettime window and the target reference signal group; or, the firstreceiver receives a second signal, wherein the first time window belongsto the target time window, and the second signal is used to determinethe target time window and the target reference signal group.
 10. Thesecond node according to claim 8, wherein the second processordetermines whether to transmit a given first-type reference signal in afirst given transmission occasion; wherein the given first-typereference signal is any first-type reference signal comprised in afirst-type reference signal set, and the first-type reference signal setis used to determine whether the first signal is transmitted; a firsttransmission occasion set is reserved for the given first-type referencesignal, and the first given transmission occasion is one transmissionoccasion in the first transmission occasion set.
 11. The second nodeaccording to claim 8, wherein the second processor determines whether totransmit a given second-type reference signal in a second giventransmission occasion; wherein the given second-type reference signal isany second-type reference signal comprised in a second-type referencesignal set, and the first reference signal is a second-type referencesignal in the second-type reference signal set; a second transmissionoccasion set is reserved for the given second-type reference signal, andthe second given transmission occasion is one transmission occasion inthe second transmission occasion set.
 12. The second node according toclaim 8, wherein any said first-type time window belongs to a channeloccupancy duration.
 13. The second node according to claim 8, whereinthe first signal comprises a RACH Preamble, and a search space set towhich the first resource block belongs is identified by arecoverySearchSpaceId.
 14. The second node according to claim 8, whereinthe target reference signal group comprises K reference signals, K beinga positive integer greater than 1; the K reference signals respectivelycorrespond to K indexes, and the K indexes are used to determine thesecond reference signal out of the K reference signals; the K indexesare non-negative integers, respectively.
 15. A method in a first nodefor wireless communications, comprising: transmitting a first signal;and monitoring a first-type signaling in a first resource block in afirst time window in a first sub-band; wherein the first signal is usedto determine a first reference signal; for the monitoring on thefirst-type signaling in the first resource block in the first timewindow, the first node assumes same QCL parameters as a target referencesignal; the target reference signal is either the first reference signalor a second reference signal; whether the first time window belongs to afirst-type time window is used to determine the target reference signalbetween the first reference signal and the second reference signal; anysaid first-type time window corresponds to a reference signal group, atarget time window is the first-type time window, and the target timewindow corresponds to a target reference signal group; when the firsttime window belongs to the target time window, whether the firstreference signal and one reference signal from the target referencesignal group are QCLed is used to determine the target reference signalbetween the first reference signal and the second reference signal. 16.The method according to claim 15, comprising: receiving a firstsignaling; wherein the first time window belongs to the target timewindow; the first signaling is used to determine the target time windowand the target reference signal group; or, performing a first accessdetection; and transmitting a second signal upon completion of the firstaccess detection; wherein the first time window belongs to the targettime window; the second signal is used to determine the target timewindow and the target reference signal group.
 17. The method accordingto claim 15, comprising: determining whether to receive a givenfirst-type reference signal in a first given transmission occasion; anddetermining whether a first condition is fulfilled for each first-typereference signal comprised in a first-type reference signal set; whereinwhether each first-type reference signal comprised in the first-typereference signal set fulfills the first condition is used to determinewhether the first signal is transmitted; the first node determines thateach first-type reference signal comprised in the first-type referencesignal set fulfills the first condition, and determines to transmit thefirst signal; the given first-type reference signal is any first-typereference signal comprised in the first-type reference signal set, afirst transmission occasion set is reserved for the given first-typereference signal, and the first given transmission occasion is onetransmission occasion in the first transmission occasion set; when thegiven first-type reference signal fulfills one of a first conditionsubset and a second condition subset, the given first-type referencesignal fulfills the first condition; the first condition subsetcomprises: a number of transmission occasions comprised by a firstoccasion subset is greater than a first threshold; the first node dropsreceiving the given first-type reference signal in the first occasionsubset, the first occasion subset being a subset of the firsttransmission occasion set; the second condition subset comprises: afirst received quality is worse than a second threshold; a measurementon the given first-type reference signal in a second occasion subset isused to determine the first received quality, and the first nodereceives the given first-type reference signal in the second occasionsubset, the second occasion subset being a subset of the firsttransmission occasion set.
 18. The method according to claim 15,comprising: determining whether to receive a given second-type referencesignal in a second given transmission occasion; and determining whethera second condition is fulfilled for each second-type reference signalcomprised in a second-type reference signal set; wherein a second-typereference signal subset is composed of second-type reference signalscomprised in the second-type reference signal set that fulfill thesecond condition, and the first reference signal is a second-typereference signal in the second-type reference signal subset; the givensecond-type reference signal is any second-type reference signalcomprised in the second-type reference signal set, a second transmissionoccasion set is reserved for the given second-type reference signal, andthe second given transmission occasion is one transmission occasion inthe second transmission occasion set; when the given second-typereference signal fulfills both a third condition subset and a fourthcondition subset, the given second-type reference signal fulfills thesecond condition; the third condition subset comprises: a number oftransmission occasions comprised by a third occasion subset is greaterthan a third threshold; the first node receives the given second-typereference signal in the third occasion subset, the third occasion subsetbeing a subset of the second transmission occasion set; the fourthcondition subset comprises: a second channel quality is greater than orequal to a fourth threshold; a measurement on the given second-typereference signal in the third occasion subset is used to determine thesecond channel quality.
 19. The method according to claim 15, whereinany said first-type time window belongs to a channel occupancy duration;or, the first signal comprises a RACH Preamble, and a search space setto which the first resource block belongs is identified by a recoverySearchSpaceId.
 20. The method according to claim 15, wherein the targetreference signal group comprises K reference signals, K being a positiveinteger greater than 1; the K reference signals respectively correspondto K indexes, and the K indexes are used to determine the secondreference signal out of the K reference signals; the K indexes arenon-negative integers, respectively.